1957397002 has 32 divisors (see below), whose sum is σ = 3226474944. Its totient is φ = 883238400.

The previous prime is 1957396999. The next prime is 1957397003. The reversal of 1957397002 is 2007937591.

It is a self number, because there is not a number n which added to its sum of digits gives 1957397002.

It is not an unprimeable number, because it can be changed into a prime (1957397003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2383752 + ... + 2384572.

It is an arithmetic number, because the mean of its divisors is an integer number (100827342).

Almost surely, 2^1957397002 is an apocalyptic number.

1957397002 is the 36124-th pentagonal number.

1957397002 is a deficient number, since it is larger than the sum of its proper divisors (1269077942).

1957397002 is a wasteful number, since it uses less digits than its factorization.

1957397002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 1957397002 is about 44242.4796095336. The cubic root of 1957397002 is about 1250.9106967706.

The spelling of 1957397002 in words is "one billion, nine hundred fifty-seven million, three hundred ninety-seven thousand, two".