981015938 has 16 divisors (see below), whose sum is σ = 1722760704. Its totient is φ = 410180640.

The previous prime is 981015907. The next prime is 981015947. The reversal of 981015938 is 839510189.

It is a happy number.

981015938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×981015938² = 1924784541220039688, which contains 22 as substring.

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, 853970 + ... + 855117.

It is an arithmetic number, because the mean of its divisors is an integer number (107672544).

Almost surely, 2^981015938 is an apocalyptic number.

981015938 is a deficient number, since it is larger than the sum of its proper divisors (741744766).

981015938 is a wasteful number, since it uses less digits than its factorization.

981015938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709137.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 981015938 is about 31321.1739562871. The cubic root of 981015938 is about 993.6315077367.

The spelling of 981015938 in words is "nine hundred eighty-one million, fifteen thousand, nine hundred thirty-eight".