1814497020 has 144 divisors (see below), whose sum is σ = 6460429248. Its totient is φ = 403522560.

The previous prime is 1814497001. The next prime is 1814497037. The reversal of 1814497020 is 207944181.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 27160 + ... + 66080.

It is an arithmetic number, because the mean of its divisors is an integer number (44864092).

Almost surely, 2^1814497020 is an apocalyptic number.

1814497020 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 1814497020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3230214624).

1814497020 is an abundant number, since it is smaller than the sum of its proper divisors (4645932228).

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

1814497020 is a wasteful number, since it uses less digits than its factorization.

1814497020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38980 (or 38975 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1814497020 is about 42596.9132684517. The cubic root of 1814497020 is about 1219.6973673791.

The spelling of 1814497020 in words is "one billion, eight hundred fourteen million, four hundred ninety-seven thousand, twenty".