1957708516 has 9 divisors (see below), whose sum is σ = 3426144771. Its totient is φ = 978810012.

The previous prime is 1957708513. The next prime is 1957708573. The reversal of 1957708516 is 6158077591.

It is a happy number.

The square root of 1957708516 is 44246.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1957708516.

It is not an unprimeable number, because it can be changed into a prime (1957708513) 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 2 ways as a sum of consecutive naturals, for example, 77431 + ... + 99553.

Almost surely, 2^1957708516 is an apocalyptic number.

1957708516 is the 44246-th square number.

It is an amenable number.

1957708516 is a deficient number, since it is larger than the sum of its proper divisors (1468436255).

1957708516 is an frugal number, since it uses more digits than its factorization.

1957708516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44250 (or 22125 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 49.

The cubic root of 1957708516 is about 1250.9770528419.

Multiplying 1957708516 by its sum of digits (49), we get a square (95927717284 = 309722²).

The spelling of 1957708516 in words is "one billion, nine hundred fifty-seven million, seven hundred eight thousand, five hundred sixteen".