981974910 has 256 divisors, whose sum is σ = 3105423360. Its totient is φ = 193259520.

The previous prime is 981974899. The next prime is 981974921. The reversal of 981974910 is 19479189.

It is an interprime number because it is at equal distance from previous prime (981974899) and next prime (981974921).

It is a self number, because there is not a number n which added to its sum of digits gives 981974910.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2102497 + ... + 2102963.

It is an arithmetic number, because the mean of its divisors is an integer number (12130560).

Almost surely, 2^981974910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981974910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1552711680).

981974910 is an abundant number, since it is smaller than the sum of its proper divisors (2123448450).

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

981974910 is a wasteful number, since it uses less digits than its factorization.

981974910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 981974910 is about 31336.4789023911. The cubic root of 981974910 is about 993.9551703268.

The spelling of 981974910 in words is "nine hundred eighty-one million, nine hundred seventy-four thousand, nine hundred ten".