1497193920 has 168 divisors, whose sum is σ = 5420959440. Its totient is φ = 378224640.

The previous prime is 1497193913. The next prime is 1497193921. The reversal of 1497193920 is 293917941.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497193921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41040 + ... + 68400.

Almost surely, 2^1497193920 is an apocalyptic number.

1497193920 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 1497193920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2710479720).

1497193920 is an abundant number, since it is smaller than the sum of its proper divisors (3923765520).

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

1497193920 is a wasteful number, since it uses less digits than its factorization.

1497193920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27403 (or 27390 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 1497193920 is about 38693.5901668480. The cubic root of 1497193920 is about 1143.9999836993. Note that the first 4 decimals are identical.

The spelling of 1497193920 in words is "one billion, four hundred ninety-seven million, one hundred ninety-three thousand, nine hundred twenty".