2971813689 has 24 divisors (see below), whose sum is σ = 4630938312. Its totient is φ = 1825597440.

The previous prime is 2971813679. The next prime is 2971813703. The reversal of 2971813689 is 9863181792.

It can be written as a sum of positive squares in 4 ways, for example, as 690796089 + 2281017600 = 26283^2 + 47760^2 .

It is not a de Polignac number, because 2971813689 - 2⁷ = 2971813561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2971813679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45499 + ... + 89519.

It is an arithmetic number, because the mean of its divisors is an integer number (192955763).

Almost surely, 2^2971813689 is an apocalyptic number.

It is an amenable number.

2971813689 is a deficient number, since it is larger than the sum of its proper divisors (1659124623).

2971813689 is a wasteful number, since it uses less digits than its factorization.

2971813689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44617 (or 44614 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 2971813689 is about 54514.3438830552. The cubic root of 2971813689 is about 1437.7184950701.

The spelling of 2971813689 in words is "two billion, nine hundred seventy-one million, eight hundred thirteen thousand, six hundred eighty-nine".