218045894 has 16 divisors (see below), whose sum is σ = 357196176. Its totient is φ = 99002400.

The previous prime is 218045873. The next prime is 218045941. The reversal of 218045894 is 498540812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16964 + ... + 26904.

It is an arithmetic number, because the mean of its divisors is an integer number (22324761).

Almost surely, 2^218045894 is an apocalyptic number.

218045894 is a deficient number, since it is larger than the sum of its proper divisors (139150282).

218045894 is a wasteful number, since it uses less digits than its factorization.

218045894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10951.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 218045894 is about 14766.3771453935. The cubic root of 218045894 is about 601.8883966578. Note that the first 3 decimals are identical.

The spelling of 218045894 in words is "two hundred eighteen million, forty-five thousand, eight hundred ninety-four".