1957497612 has 24 divisors (see below), whose sum is σ = 5219993856. Its totient is φ = 559285008.

The previous prime is 1957497611. The next prime is 1957497613. The reversal of 1957497612 is 2167947591.

It is an interprime number because it is at equal distance from previous prime (1957497611) and next prime (1957497613).

It is not an unprimeable number, because it can be changed into a prime (1957497611) 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, 11651688 + ... + 11651855.

It is an arithmetic number, because the mean of its divisors is an integer number (217499744).

Almost surely, 2^1957497612 is an apocalyptic number.

1957497612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1957497612 is an abundant number, since it is smaller than the sum of its proper divisors (3262496244).

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

1957497612 is a wasteful number, since it uses less digits than its factorization.

1957497612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23303557 (or 23303555 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 1957497612 is about 44243.6166243222. The cubic root of 1957497612 is about 1250.9321286295.

The spelling of 1957497612 in words is "one billion, nine hundred fifty-seven million, four hundred ninety-seven thousand, six hundred twelve".