1497563820 has 144 divisors (see below), whose sum is σ = 4665548160. Its totient is φ = 388643328.

The previous prime is 1497563803. The next prime is 1497563839. The reversal of 1497563820 is 283657941.

1497563820 is a `hidden beast` number, since 1 + 4 + 9 + 7 + 5 + 638 + 2 + 0 = 666.

1497563820 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

1497563820 is strictly pandigital in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1936954 + ... + 1937726.

It is an arithmetic number, because the mean of its divisors is an integer number (32399640).

It is a 1-persistent number, because it is pandigital, but 2⋅1497563820 = 2995127640 is not.

It is a vampire number, since it can be written as 23190 ⋅ 64578 (with its own digits).

Almost surely, 2^1497563820 is an apocalyptic number.

1497563820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1497563820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332774080).

1497563820 is an abundant number, since it is smaller than the sum of its proper divisors (3167984340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1497563820 is a wasteful number, since it uses less digits than its factorization.

1497563820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1497563820 is about 38698.3697331037. The cubic root of 1497563820 is about 1144.0941889864.

The spelling of 1497563820 in words is "one billion, four hundred ninety-seven million, five hundred sixty-three thousand, eight hundred twenty".