813655430 has 64 divisors (see below), whose sum is σ = 1791936000. Its totient is φ = 259780608.

The previous prime is 813655421. The next prime is 813655439. The reversal of 813655430 is 34556318.

It is an interprime number because it is at equal distance from previous prime (813655421) and next prime (813655439).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813655439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73286 + ... + 83654.

It is an arithmetic number, because the mean of its divisors is an integer number (27999000).

Almost surely, 2^813655430 is an apocalyptic number.

813655430 is an abundant number, since it is smaller than the sum of its proper divisors (978280570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813655430 is a wasteful number, since it uses less digits than its factorization.

813655430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10461.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 813655430 is about 28524.6460100735. The cubic root of 813655430 is about 933.5699033257.

The spelling of 813655430 in words is "eight hundred thirteen million, six hundred fifty-five thousand, four hundred thirty".