1939376457 has 12 divisors (see below), whose sum is σ = 2801985264. Its totient is φ = 1292611320.

The previous prime is 1939376441. The next prime is 1939376459. The reversal of 1939376457 is 7546739391.

It is a happy number.

It is not a de Polignac number, because 1939376457 - 2⁴ = 1939376441 is a prime.

It is a super-2 number, since 2×1939376457² = 7522362083931745698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1939376459) 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, 18582 + ... + 64992.

It is an arithmetic number, because the mean of its divisors is an integer number (233498772).

Almost surely, 2^1939376457 is an apocalyptic number.

It is an amenable number.

1939376457 is a deficient number, since it is larger than the sum of its proper divisors (862608807).

1939376457 is a wasteful number, since it uses less digits than its factorization.

1939376457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51060 (or 51057 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 1939376457 is about 44038.3521149464. The cubic root of 1939376457 is about 1247.0600683558.

The spelling of 1939376457 in words is "one billion, nine hundred thirty-nine million, three hundred seventy-six thousand, four hundred fifty-seven".