818531086 has 8 divisors (see below), whose sum is σ = 1228017024. Its totient is φ = 409192080.

The previous prime is 818531083. The next prime is 818531137. The reversal of 818531086 is 680135818.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818531081) 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, 21550 + ... + 45841.

It is an arithmetic number, because the mean of its divisors is an integer number (153502128).

Almost surely, 2^818531086 is an apocalyptic number.

818531086 is a deficient number, since it is larger than the sum of its proper divisors (409485938).

818531086 is a wasteful number, since it uses less digits than its factorization.

818531086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73466.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 818531086 is about 28609.9822789180. The cubic root of 818531086 is about 935.4309302636.

The spelling of 818531086 in words is "eight hundred eighteen million, five hundred thirty-one thousand, eighty-six".