1957113278 has 16 divisors (see below), whose sum is σ = 3094744320. Its totient is φ = 925684056.

The previous prime is 1957113251. The next prime is 1957113281. The reversal of 1957113278 is 8723117591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11750 + ... + 63657.

It is an arithmetic number, because the mean of its divisors is an integer number (193421520).

Almost surely, 2^1957113278 is an apocalyptic number.

1957113278 is a deficient number, since it is larger than the sum of its proper divisors (1137631042).

1957113278 is a wasteful number, since it uses less digits than its factorization.

1957113278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76111.

The product of its digits is 105840, while the sum is 44.

The square root of 1957113278 is about 44239.2730274809. The cubic root of 1957113278 is about 1250.8502541632.

The spelling of 1957113278 in words is "one billion, nine hundred fifty-seven million, one hundred thirteen thousand, two hundred seventy-eight".