2978991744 has 32 divisors (see below), whose sum is σ = 7912947840. Its totient is φ = 992997120.

The previous prime is 2978991689. The next prime is 2978991751. The reversal of 2978991744 is 4471998792.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3878512 + ... + 3879279.

It is an arithmetic number, because the mean of its divisors is an integer number (247279620).

Almost surely, 2^2978991744 is an apocalyptic number.

2978991744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2978991744 is an abundant number, since it is smaller than the sum of its proper divisors (4933956096).

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

2978991744 is an equidigital number, since it uses as much as digits as its factorization.

2978991744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757808 (or 7757796 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The square root of 2978991744 is about 54580.1405641283. The cubic root of 2978991744 is about 1438.8751091474.

The spelling of 2978991744 in words is "two billion, nine hundred seventy-eight million, nine hundred ninety-one thousand, seven hundred forty-four".