981516279 has 8 divisors (see below), whose sum is σ = 1344058480. Its totient is φ = 636659136.

The previous prime is 981516259. The next prime is 981516287. The reversal of 981516279 is 972615189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 981516279 - 2⁸ = 981516023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981516229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4421134 + ... + 4421355.

It is an arithmetic number, because the mean of its divisors is an integer number (168007310).

Almost surely, 2^981516279 is an apocalyptic number.

981516279 is a deficient number, since it is larger than the sum of its proper divisors (362542201).

981516279 is a wasteful number, since it uses less digits than its factorization.

981516279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842529.

The product of its digits is 272160, while the sum is 48.

The square root of 981516279 is about 31329.1602025972. The cubic root of 981516279 is about 993.8004041045.

The spelling of 981516279 in words is "nine hundred eighty-one million, five hundred sixteen thousand, two hundred seventy-nine".