981933012 has 36 divisors (see below), whose sum is σ = 2501664256. Its totient is φ = 324732240.

The previous prime is 981932989. The next prime is 981933019. The reversal of 981933012 is 210339189.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981933019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102814 + ... + 111957.

Almost surely, 2^981933012 is an apocalyptic number.

It is an amenable number.

981933012 is an abundant number, since it is smaller than the sum of its proper divisors (1519731244).

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

981933012 is a wasteful number, since it uses less digits than its factorization.

981933012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214908 (or 214903 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 981933012 is about 31335.8103772665. The cubic root of 981933012 is about 993.9410337382.

The spelling of 981933012 in words is "nine hundred eighty-one million, nine hundred thirty-three thousand, twelve".