981654916 has 24 divisors (see below), whose sum is σ = 1875033216. Its totient is φ = 445977120.

The previous prime is 981654913. The next prime is 981654943. The reversal of 981654916 is 619456189.

It is a self number, because there is not a number n which added to its sum of digits gives 981654916.

It is not an unprimeable number, because it can be changed into a prime (981654913) 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, 104485 + ... + 113491.

It is an arithmetic number, because the mean of its divisors is an integer number (78126384).

Almost surely, 2^981654916 is an apocalyptic number.

981654916 is the 19816-th heptagonal number.

It is an amenable number.

981654916 is a deficient number, since it is larger than the sum of its proper divisors (893378300).

981654916 is a wasteful number, since it uses less digits than its factorization.

981654916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499 (or 11497 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 981654916 is about 31331.3727117086. The cubic root of 981654916 is about 993.8471926035.

The spelling of 981654916 in words is "nine hundred eighty-one million, six hundred fifty-four thousand, nine hundred sixteen".