813936057 has 16 divisors (see below), whose sum is σ = 1200128448. Its totient is φ = 486535680.

The previous prime is 813936037. The next prime is 813936089. The reversal of 813936057 is 750639318.

813936057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 813936057 - 2¹⁰ = 813935033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (813936037) 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, 166528 + ... + 171345.

It is an arithmetic number, because the mean of its divisors is an integer number (75008028).

Almost surely, 2^813936057 is an apocalyptic number.

It is an amenable number.

813936057 is a deficient number, since it is larger than the sum of its proper divisors (386192391).

813936057 is a wasteful number, since it uses less digits than its factorization.

813936057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337960.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 813936057 is about 28529.5646128713. The cubic root of 813936057 is about 933.6772193541.

The spelling of 813936057 in words is "eight hundred thirteen million, nine hundred thirty-six thousand, fifty-seven".