981491316 has 24 divisors (see below), whose sum is σ = 2466311904. Its totient is φ = 301997280.

The previous prime is 981491293. The next prime is 981491317. The reversal of 981491316 is 613194189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981491317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3145650 + ... + 3145961.

It is an arithmetic number, because the mean of its divisors is an integer number (102762996).

Almost surely, 2^981491316 is an apocalyptic number.

It is an amenable number.

981491316 is an abundant number, since it is smaller than the sum of its proper divisors (1484820588).

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

981491316 is a wasteful number, since it uses less digits than its factorization.

981491316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291631 (or 6291629 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 981491316 is about 31328.7618012586. The cubic root of 981491316 is about 993.7919788920.

The spelling of 981491316 in words is "nine hundred eighty-one million, four hundred ninety-one thousand, three hundred sixteen".