1957197870 has 32 divisors (see below), whose sum is σ = 5219195040. Its totient is φ = 521919360.

The previous prime is 1957197841. The next prime is 1957197911. The reversal of 1957197870 is 787917591.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3624171 + ... + 3624710.

It is an arithmetic number, because the mean of its divisors is an integer number (163099845).

Almost surely, 2^1957197870 is an apocalyptic number.

1957197870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1957197870 is an abundant number, since it is smaller than the sum of its proper divisors (3261997170).

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

1957197870 is a wasteful number, since it uses less digits than its factorization.

1957197870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248897 (or 7248891 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 54.

The square root of 1957197870 is about 44240.2290907269. The cubic root of 1957197870 is about 1250.8682756716.

The spelling of 1957197870 in words is "one billion, nine hundred fifty-seven million, one hundred ninety-seven thousand, eight hundred seventy".