813901053 has 16 divisors (see below), whose sum is σ = 1247662080. Its totient is φ = 462299376.

The previous prime is 813901051. The next prime is 813901057. The reversal of 813901053 is 350109318.

It is a happy number.

It is not a de Polignac number, because 813901053 - 2¹ = 813901051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 813901053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813901051) 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, 112533 + ... + 119546.

It is an arithmetic number, because the mean of its divisors is an integer number (77978880).

Almost surely, 2^813901053 is an apocalyptic number.

It is an amenable number.

813901053 is a deficient number, since it is larger than the sum of its proper divisors (433761027).

813901053 is a wasteful number, since it uses less digits than its factorization.

813901053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232256.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 813901053 is about 28528.9511373973. The cubic root of 813901053 is about 933.6638346394.

The spelling of 813901053 in words is "eight hundred thirteen million, nine hundred one thousand, fifty-three".