981434188 has 12 divisors (see below), whose sum is σ = 1962868432. Its totient is φ = 420614640.

The previous prime is 981434171. The next prime is 981434197. The reversal of 981434188 is 881434189.

981434188 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17525583 + ... + 17525638.

Almost surely, 2^981434188 is an apocalyptic number.

It is an amenable number.

981434188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

981434188 is a wasteful number, since it uses less digits than its factorization.

981434188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35051232 (or 35051230 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 981434188 is about 31327.8500379455. The cubic root of 981434188 is about 993.7726971966.

Subtracting from 981434188 its reverse (881434189), we obtain a palindrome (99999999).

The spelling of 981434188 in words is "nine hundred eighty-one million, four hundred thirty-four thousand, one hundred eighty-eight".