218934156 has 96 divisors (see below), whose sum is σ = 610086400. Its totient is φ = 61048512.

The previous prime is 218934151. The next prime is 218934173. The reversal of 218934156 is 651439812.

218934156 = T₄₃₁ + T₄₃₂ + ... + T₁₁₁₆.

It is not an unprimeable number, because it can be changed into a prime (218934151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176370 + ... + 177606.

Almost surely, 2^218934156 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 218934156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305043200).

218934156 is an abundant number, since it is smaller than the sum of its proper divisors (391152244).

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

218934156 is a wasteful number, since it uses less digits than its factorization.

218934156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1292 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 218934156 is about 14796.4237571110. The cubic root of 218934156 is about 602.7046013454.

The spelling of 218934156 in words is "two hundred eighteen million, nine hundred thirty-four thousand, one hundred fifty-six".