1957859436 has 48 divisors (see below), whose sum is σ = 5078463488. Its totient is φ = 582984000.

The previous prime is 1957859419. The next prime is 1957859437. The reversal of 1957859436 is 6349587591.

It is a super-2 number, since 2×1957859436² = 7666427142268476192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1957859437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197590 + ... + 207261.

Almost surely, 2^1957859436 is an apocalyptic number.

It is an amenable number.

1957859436 is an abundant number, since it is smaller than the sum of its proper divisors (3120604052).

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

1957859436 is a wasteful number, since it uses less digits than its factorization.

1957859436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404902 (or 404900 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The square root of 1957859436 is about 44247.7054320334. The cubic root of 1957859436 is about 1251.0091980096.

The spelling of 1957859436 in words is "one billion, nine hundred fifty-seven million, eight hundred fifty-nine thousand, four hundred thirty-six".