1957905384 has 16 divisors (see below), whose sum is σ = 4894763520. Its totient is φ = 652635120.

The previous prime is 1957905377. The next prime is 1957905421. The reversal of 1957905384 is 4835097591.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40789672 + ... + 40789719.

It is an arithmetic number, because the mean of its divisors is an integer number (305922720).

Almost surely, 2^1957905384 is an apocalyptic number.

It is an amenable number.

1957905384 is an abundant number, since it is smaller than the sum of its proper divisors (2936858136).

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

1957905384 is a wasteful number, since it uses less digits than its factorization.

1957905384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81579400 (or 81579396 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 1957905384 is about 44248.2246423515. The cubic root of 1957905384 is about 1251.0189843643.

The spelling of 1957905384 in words is "one billion, nine hundred fifty-seven million, nine hundred five thousand, three hundred eighty-four".