213373818 has 64 divisors (see below), whose sum is σ = 543456000. Its totient is φ = 60789312.

The previous prime is 213373807. The next prime is 213373883. The reversal of 213373818 is 818373312.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191848 + ... + 192956.

It is an arithmetic number, because the mean of its divisors is an integer number (8491500).

Almost surely, 2^213373818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213373818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271728000).

213373818 is an abundant number, since it is smaller than the sum of its proper divisors (330082182).

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

213373818 is a wasteful number, since it uses less digits than its factorization.

213373818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1630 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 213373818 is about 14607.3206988825. The cubic root of 213373818 is about 597.5584280205.

The spelling of 213373818 in words is "two hundred thirteen million, three hundred seventy-three thousand, eight hundred eighteen".