818386460 has 96 divisors (see below), whose sum is σ = 1911288960. Its totient is φ = 292773888.

The previous prime is 818386433. The next prime is 818386469. The reversal of 818386460 is 64683818.

It is a super-2 number, since 2×818386460² = 1339512795822663200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818386469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1790552 + ... + 1791008.

It is an arithmetic number, because the mean of its divisors is an integer number (19909260).

Almost surely, 2^818386460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818386460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955644480).

818386460 is an abundant number, since it is smaller than the sum of its proper divisors (1092902500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818386460 is a wasteful number, since it uses less digits than its factorization.

818386460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 818386460 is about 28607.4546228776. The cubic root of 818386460 is about 935.3758333528.

The spelling of 818386460 in words is "eight hundred eighteen million, three hundred eighty-six thousand, four hundred sixty".