813815454 has 8 divisors (see below), whose sum is σ = 1627630920. Its totient is φ = 271271816.

The previous prime is 813815447. The next prime is 813815537. The reversal of 813815454 is 454518318.

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

813815454 is an admirable number.

It is a super-2 number, since 2×813815454² = 1324591186338452232, 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 3 ways as a sum of consecutive naturals, for example, 67817949 + ... + 67817960.

It is an arithmetic number, because the mean of its divisors is an integer number (203453865).

Almost surely, 2^813815454 is an apocalyptic number.

813815454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

813815454 is a wasteful number, since it uses less digits than its factorization.

813815454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135635914.

The product of its digits is 76800, while the sum is 39.

The square root of 813815454 is about 28527.4508850686. The cubic root of 813815454 is about 933.6311019576.

The spelling of 813815454 in words is "eight hundred thirteen million, eight hundred fifteen thousand, four hundred fifty-four".