2972787641 has 4 divisors (see below), whose sum is σ = 3002221284. Its totient is φ = 2943354000.

The previous prime is 2972787613. The next prime is 2972787667. The reversal of 2972787641 is 1467872792.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2937206416 + 35581225 = 54196^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2972787641 - 2⁶ = 2972787577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2972787611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14716670 + ... + 14716871.

It is an arithmetic number, because the mean of its divisors is an integer number (750555321).

Almost surely, 2^2972787641 is an apocalyptic number.

It is an amenable number.

2972787641 is a deficient number, since it is larger than the sum of its proper divisors (29433643).

2972787641 is a wasteful number, since it uses less digits than its factorization.

2972787641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29433642.

The product of its digits is 2370816, while the sum is 53.

The square root of 2972787641 is about 54523.2761396452. The cubic root of 2972787641 is about 1437.8755389955.

The spelling of 2972787641 in words is "two billion, nine hundred seventy-two million, seven hundred eighty-seven thousand, six hundred forty-one".