2972787643 has 16 divisors (see below), whose sum is σ = 3429515520. Its totient is φ = 2524175136.

The previous prime is 2972787613. The next prime is 2972787667. The reversal of 2972787643 is 3467872792.

2972787643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2972787643 - 2⁵ = 2972787611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2972787613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357588 + ... + 365806.

It is an arithmetic number, because the mean of its divisors is an integer number (214344720).

Almost surely, 2^2972787643 is an apocalyptic number.

2972787643 is a deficient number, since it is larger than the sum of its proper divisors (456727877).

2972787643 is a wasteful number, since it uses less digits than its factorization.

2972787643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8706.

The product of its digits is 7112448, while the sum is 55.

The square root of 2972787643 is about 54523.2761579860. The cubic root of 2972787643 is about 1437.8755393179.

It can be divided in two parts, 29727 and 87643, that added together give a triangular number (117370 = T₄₈₄).

The spelling of 2972787643 in words is "two billion, nine hundred seventy-two million, seven hundred eighty-seven thousand, six hundred forty-three".