813280893 has 16 divisors (see below), whose sum is σ = 1096457856. Its totient is φ = 536160960.

The previous prime is 813280873. The next prime is 813280927. The reversal of 813280893 is 398082318.

It is not a de Polignac number, because 813280893 - 2⁶ = 813280829 is a prime.

It is a super-2 number, since 2×813280893² = 1322851621837754898, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813280873) 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, 289371 + ... + 292167.

It is an arithmetic number, because the mean of its divisors is an integer number (68528616).

Almost surely, 2^813280893 is an apocalyptic number.

It is an amenable number.

813280893 is a deficient number, since it is larger than the sum of its proper divisors (283176963).

813280893 is a wasteful number, since it uses less digits than its factorization.

813280893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 813280893 is about 28518.0801071881. The cubic root of 813280893 is about 933.4266362365.

The spelling of 813280893 in words is "eight hundred thirteen million, two hundred eighty thousand, eight hundred ninety-three".