492871815 has 12 divisors (see below), whose sum is σ = 854311224. Its totient is φ = 262864944.

The previous prime is 492871811. The next prime is 492871817. The reversal of 492871815 is 518178294.

492871815 is a `hidden beast` number, since 492 + 87 + 1 + 81 + 5 = 666.

It is not a de Polignac number, because 492871815 - 2² = 492871811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 10952707 = 492871815 / (4 + 9 + 2 + 8 + 7 + 1 + 8 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492871811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5476309 + ... + 5476398.

It is an arithmetic number, because the mean of its divisors is an integer number (71192602).

Almost surely, 2^492871815 is an apocalyptic number.

492871815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

492871815 is a deficient number, since it is larger than the sum of its proper divisors (361439409).

492871815 is a wasteful number, since it uses less digits than its factorization.

492871815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10952718 (or 10952715 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 492871815 is about 22200.7165424902. The cubic root of 492871815 is about 789.9106959886.

The spelling of 492871815 in words is "four hundred ninety-two million, eight hundred seventy-one thousand, eight hundred fifteen".