218749074 has 16 divisors (see below), whose sum is σ = 438542400. Its totient is φ = 72742320.

The previous prime is 218749061. The next prime is 218749103. The reversal of 218749074 is 470947812.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

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, 40774 + ... + 45825.

It is an arithmetic number, because the mean of its divisors is an integer number (27408900).

Almost surely, 2^218749074 is an apocalyptic number.

218749074 is an abundant number, since it is smaller than the sum of its proper divisors (219793326).

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

218749074 is a wasteful number, since it uses less digits than its factorization.

218749074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87025.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 218749074 is about 14790.1681532023. The cubic root of 218749074 is about 602.5347158362.

The spelling of 218749074 in words is "two hundred eighteen million, seven hundred forty-nine thousand, seventy-four".