1957765972 has 6 divisors (see below), whose sum is σ = 3426090458. Its totient is φ = 978882984.

The previous prime is 1957765969. The next prime is 1957765991. The reversal of 1957765972 is 2795677591.

It can be written as a sum of positive squares in only one way, i.e., 1226820676 + 730945296 = 35026^2 + 27036^2 .

It is a super-2 number, since 2×1957765972² = 7665695202242209568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244720743 + ... + 244720750.

Almost surely, 2^1957765972 is an apocalyptic number.

It is an amenable number.

1957765972 is a deficient number, since it is larger than the sum of its proper divisors (1468324486).

1957765972 is a wasteful number, since it uses less digits than its factorization.

1957765972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489441497 (or 489441495 counting only the distinct ones).

The product of its digits is 8334900, while the sum is 58.

The square root of 1957765972 is about 44246.6492742671. The cubic root of 1957765972 is about 1250.9892908630.

The spelling of 1957765972 in words is "one billion, nine hundred fifty-seven million, seven hundred sixty-five thousand, nine hundred seventy-two".