813145454 has 16 divisors (see below), whose sum is σ = 1332101376. Its totient is φ = 369195000.

The previous prime is 813145447. The next prime is 813145481. The reversal of 813145454 is 454541318.

It is a super-2 number, since 2×813145454² = 1322411058721732232, 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, 422 + ... + 40329.

It is an arithmetic number, because the mean of its divisors is an integer number (83256336).

Almost surely, 2^813145454 is an apocalyptic number.

813145454 is a deficient number, since it is larger than the sum of its proper divisors (518955922).

813145454 is a wasteful number, since it uses less digits than its factorization.

813145454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41671.

The product of its digits is 38400, while the sum is 35.

The square root of 813145454 is about 28515.7053919415. The cubic root of 813145454 is about 933.3748175722.

It can be divided in two parts, 81314 and 5454, that added together give a palindrome (86768).

The spelling of 813145454 in words is "eight hundred thirteen million, one hundred forty-five thousand, four hundred fifty-four".