981004995 has 24 divisors (see below), whose sum is σ = 1701148176. Its totient is φ = 522975168.

The previous prime is 981004963. The next prime is 981005033. The reversal of 981004995 is 599400189.

It is not a de Polignac number, because 981004995 - 2⁵ = 981004963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 981004995.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173757 + ... + 179313.

It is an arithmetic number, because the mean of its divisors is an integer number (70881174).

Almost surely, 2^981004995 is an apocalyptic number.

981004995 is a deficient number, since it is larger than the sum of its proper divisors (720143181).

981004995 is a wasteful number, since it uses less digits than its factorization.

981004995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491 (or 9488 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 981004995 is about 31320.9992656684. Note that the first 3 decimals coincide. The cubic root of 981004995 is about 993.6278131484.

The spelling of 981004995 in words is "nine hundred eighty-one million, four thousand, nine hundred ninety-five".