978652313 has 4 divisors (see below), whose sum is σ = 979584528. Its totient is φ = 977720100.

The previous prime is 978652289. The next prime is 978652319. The reversal of 978652313 is 313256879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978652313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978652319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464531 + ... + 466632.

It is an arithmetic number, because the mean of its divisors is an integer number (244896132).

Almost surely, 2^978652313 is an apocalyptic number.

It is an amenable number.

978652313 is a deficient number, since it is larger than the sum of its proper divisors (932215).

978652313 is a wasteful number, since it uses less digits than its factorization.

978652313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932214.

The product of its digits is 272160, while the sum is 44.

The square root of 978652313 is about 31283.4191385788. The cubic root of 978652313 is about 992.8328591457.

The spelling of 978652313 in words is "nine hundred seventy-eight million, six hundred fifty-two thousand, three hundred thirteen".