2977861768 has 32 divisors (see below), whose sum is σ = 6397839360. Its totient is φ = 1272885120.

The previous prime is 2977861753. The next prime is 2977861801. The reversal of 2977861768 is 8671687792.

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, 47973 + ... + 90868.

It is an arithmetic number, because the mean of its divisors is an integer number (199932480).

Almost surely, 2^2977861768 is an apocalyptic number.

2977861768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2977861768 is an abundant number, since it is smaller than the sum of its proper divisors (3419977592).

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

2977861768 is a wasteful number, since it uses less digits than its factorization.

2977861768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139237 (or 139233 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 61.

The square root of 2977861768 is about 54569.7880516316. The cubic root of 2977861768 is about 1438.6931572099.

The spelling of 2977861768 in words is "two billion, nine hundred seventy-seven million, eight hundred sixty-one thousand, seven hundred sixty-eight".