2978443968 has 56 divisors (see below), whose sum is σ = 8029181808. Its totient is φ = 974078976.

The previous prime is 2978443939. The next prime is 2978443987. The reversal of 2978443968 is 8693448792.

It is a super-2 number, since 2×2978443968² = 17742256941031170048, 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, 136171 + ... + 156522.

Almost surely, 2^2978443968 is an apocalyptic number.

It is an amenable number.

2978443968 is an abundant number, since it is smaller than the sum of its proper divisors (5050737840).

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

2978443968 is a wasteful number, since it uses less digits than its factorization.

2978443968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292761 (or 292751 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 60.

The square root of 2978443968 is about 54575.1222444806. The cubic root of 2978443968 is about 1438.7869104508.

The spelling of 2978443968 in words is "two billion, nine hundred seventy-eight million, four hundred forty-three thousand, nine hundred sixty-eight".