978131358 has 48 divisors (see below), whose sum is σ = 2162474496. Its totient is φ = 319457040.

The previous prime is 978131347. The next prime is 978131393. The reversal of 978131358 is 853131879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211135 + ... + 215717.

It is an arithmetic number, because the mean of its divisors is an integer number (45051552).

Almost surely, 2^978131358 is an apocalyptic number.

978131358 is an abundant number, since it is smaller than the sum of its proper divisors (1184343138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978131358 is a wasteful number, since it uses less digits than its factorization.

978131358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829 (or 4826 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 978131358 is about 31275.0916545420. The cubic root of 978131358 is about 992.6566600203.

The spelling of 978131358 in words is "nine hundred seventy-eight million, one hundred thirty-one thousand, three hundred fifty-eight".