816300045 has 64 divisors (see below), whose sum is σ = 1592398080. Its totient is φ = 393465600.

The previous prime is 816299989. The next prime is 816300053. The reversal of 816300045 is 540003618.

It is not a de Polignac number, because 816300045 - 2²² = 812105741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 816299991 and 816300018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267267 + ... + 270303.

It is an arithmetic number, because the mean of its divisors is an integer number (24881220).

Almost surely, 2^816300045 is an apocalyptic number.

It is an amenable number.

816300045 is a deficient number, since it is larger than the sum of its proper divisors (776098035).

816300045 is a wasteful number, since it uses less digits than its factorization.

816300045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 816300045 is about 28570.9650694547. The cubic root of 816300045 is about 934.5802666743.

The spelling of 816300045 in words is "eight hundred sixteen million, three hundred thousand, forty-five".