981644832 has 360 divisors, whose sum is σ = 3441327120. Its totient is φ = 273611520.

The previous prime is 981644819. The next prime is 981644869. The reversal of 981644832 is 238446189.

It is a happy number.

981644832 is a `hidden beast` number, since 9 + 8 + 164 + 483 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 7493407 + ... + 7493537.

It is an arithmetic number, because the mean of its divisors is an integer number (9559242).

Almost surely, 2^981644832 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 981644832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1720663560).

981644832 is an abundant number, since it is smaller than the sum of its proper divisors (2459682288).

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

981644832 is a wasteful number, since it uses less digits than its factorization.

981644832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 202 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 981644832 is about 31331.2117863322. The cubic root of 981644832 is about 993.8437895103.

The spelling of 981644832 in words is "nine hundred eighty-one million, six hundred forty-four thousand, eight hundred thirty-two".