1931973057 has 12 divisors (see below), whose sum is σ = 3189288960. Its totient is φ = 1103984568.

The previous prime is 1931973053. The next prime is 1931973133. The reversal of 1931973057 is 7503791391.

It is not a de Polignac number, because 1931973057 - 2² = 1931973053 is a prime.

It is a super-3 number, since 3×1931973057³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1931973053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15333057 + ... + 15333182.

It is an arithmetic number, because the mean of its divisors is an integer number (265774080).

Almost surely, 2^1931973057 is an apocalyptic number.

It is an amenable number.

1931973057 is a deficient number, since it is larger than the sum of its proper divisors (1257315903).

1931973057 is a wasteful number, since it uses less digits than its factorization.

1931973057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30666252 (or 30666249 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 45.

The square root of 1931973057 is about 43954.2154633660. The cubic root of 1931973057 is about 1245.4711972656.

The spelling of 1931973057 in words is "one billion, nine hundred thirty-one million, nine hundred seventy-three thousand, fifty-seven".