1957142887 has 18 divisors (see below), whose sum is σ = 2341432968. Its totient is φ = 1602406872.

The previous prime is 1957142879. The next prime is 1957142927. The reversal of 1957142887 is 7882417591.

It is not a de Polignac number, because 1957142887 - 2³ = 1957142879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957142827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2691718 + ... + 2692444.

Almost surely, 2^1957142887 is an apocalyptic number.

1957142887 is a deficient number, since it is larger than the sum of its proper divisors (384290081).

1957142887 is an frugal number, since it uses more digits than its factorization.

1957142887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 757 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 52.

The square root of 1957142887 is about 44239.6076723110. The cubic root of 1957142887 is about 1250.8565621336.

The spelling of 1957142887 in words is "one billion, nine hundred fifty-seven million, one hundred forty-two thousand, eight hundred eighty-seven".