1904372057 has 8 divisors (see below), whose sum is σ = 2180015616. Its totient is φ = 1629626112.

The previous prime is 1904372053. The next prime is 1904372077. The reversal of 1904372057 is 7502734091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1904372057 - 2² = 1904372053 is a prime.

It is a super-2 number, since 2×1904372057² = 7253265862964822498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1904372057.

It is not an unprimeable number, because it can be changed into a prime (1904372053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219848 + ... + 228345.

It is an arithmetic number, because the mean of its divisors is an integer number (272501952).

Almost surely, 2^1904372057 is an apocalyptic number.

It is an amenable number.

1904372057 is a deficient number, since it is larger than the sum of its proper divisors (275643559).

1904372057 is an equidigital number, since it uses as much as digits as its factorization.

1904372057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448807.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1904372057 is about 43639.1115514512. Note that the first 3 decimals coincide. The cubic root of 1904372057 is about 1239.5116132970.

The spelling of 1904372057 in words is "one billion, nine hundred four million, three hundred seventy-two thousand, fifty-seven".