813153855 has 8 divisors (see below), whose sum is σ = 1301046192. Its totient is φ = 433682048.

The previous prime is 813153827. The next prime is 813153863. The reversal of 813153855 is 558351318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 813153855 - 2⁸ = 813153599 is a prime.

It is a super-2 number, since 2×813153855² = 1322438383802722050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27105114 + ... + 27105143.

It is an arithmetic number, because the mean of its divisors is an integer number (162630774).

Almost surely, 2^813153855 is an apocalyptic number.

813153855 is a deficient number, since it is larger than the sum of its proper divisors (487892337).

813153855 is a wasteful number, since it uses less digits than its factorization.

813153855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54210265.

The product of its digits is 72000, while the sum is 39.

The square root of 813153855 is about 28515.8526963512. The cubic root of 813153855 is about 933.3780319438.

The spelling of 813153855 in words is "eight hundred thirteen million, one hundred fifty-three thousand, eight hundred fifty-five".