811540454 has 8 divisors (see below), whose sum is σ = 1229363568. Its totient is φ = 401752600.

The previous prime is 811540439. The next prime is 811540459. The reversal of 811540454 is 454045118.

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

It is a super-2 number, since 2×811540454² = 1317195816957052232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 811540454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811540459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008562 + ... + 2008965.

It is an arithmetic number, because the mean of its divisors is an integer number (153670446).

Almost surely, 2^811540454 is an apocalyptic number.

811540454 is a deficient number, since it is larger than the sum of its proper divisors (417823114).

811540454 is a wasteful number, since it uses less digits than its factorization.

811540454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017630.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 811540454 is about 28487.5491048282. The cubic root of 811540454 is about 932.7603095145.

The spelling of 811540454 in words is "eight hundred eleven million, five hundred forty thousand, four hundred fifty-four".