981912192 has 32 divisors (see below), whose sum is σ = 2608205280. Its totient is φ = 327303936.

The previous prime is 981912133. The next prime is 981912199. The reversal of 981912192 is 291219189.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (981912199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278148 + ... + 1278915.

It is an arithmetic number, because the mean of its divisors is an integer number (81506415).

Almost surely, 2^981912192 is an apocalyptic number.

It is an amenable number.

981912192 is an abundant number, since it is smaller than the sum of its proper divisors (1626293088).

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

981912192 is a wasteful number, since it uses less digits than its factorization.

981912192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557080 (or 2557068 counting only the distinct ones).

The product of its digits is 23328, while the sum is 42.

The square root of 981912192 is about 31335.4781677255. The cubic root of 981912192 is about 993.9340088196.

The spelling of 981912192 in words is "nine hundred eighty-one million, nine hundred twelve thousand, one hundred ninety-two".