816418082 has 4 divisors (see below), whose sum is σ = 1224627126. Its totient is φ = 408209040.

The previous prime is 816418039. The next prime is 816418091. The reversal of 816418082 is 280814618.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 431434441 + 384983641 = 20771^2 + 19621^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204104519 + ... + 204104522.

Almost surely, 2^816418082 is an apocalyptic number.

816418082 is a deficient number, since it is larger than the sum of its proper divisors (408209044).

816418082 is a wasteful number, since it uses less digits than its factorization.

816418082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408209043.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 816418082 is about 28573.0306757964. The cubic root of 816418082 is about 934.6253112772.

The spelling of 816418082 in words is "eight hundred sixteen million, four hundred eighteen thousand, eighty-two".