981156844 has 24 divisors (see below), whose sum is σ = 1748300400. Its totient is φ = 481690176.

The previous prime is 981156823. The next prime is 981156859. The reversal of 981156844 is 448651189.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 981156794 and 981156803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79182 + ... + 90730.

It is an arithmetic number, because the mean of its divisors is an integer number (72845850).

Almost surely, 2^981156844 is an apocalyptic number.

It is an amenable number.

981156844 is a deficient number, since it is larger than the sum of its proper divisors (767143556).

981156844 is a wasteful number, since it uses less digits than its factorization.

981156844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11937 (or 11935 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The square root of 981156844 is about 31323.4232484255. The cubic root of 981156844 is about 993.6790781288.

The spelling of 981156844 in words is "nine hundred eighty-one million, one hundred fifty-six thousand, eight hundred forty-four".