2971881693 has 12 divisors (see below), whose sum is σ = 4682965248. Its totient is φ = 1801140360.

The previous prime is 2971881623. The next prime is 2971881697. The reversal of 2971881693 is 3961881792.

It is a de Polignac number, because none of the positive numbers 2^k-2971881693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971881697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15009405 + ... + 15009602.

It is an arithmetic number, because the mean of its divisors is an integer number (390247104).

Almost surely, 2^2971881693 is an apocalyptic number.

It is an amenable number.

2971881693 is a deficient number, since it is larger than the sum of its proper divisors (1711083555).

2971881693 is a wasteful number, since it uses less digits than its factorization.

2971881693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30019024 (or 30019021 counting only the distinct ones).

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

The square root of 2971881693 is about 54514.9676052366. The cubic root of 2971881693 is about 1437.7294614219.

Subtracting 2971881693 from its reverse (3961881792), we obtain a palindrome (990000099).

The spelling of 2971881693 in words is "two billion, nine hundred seventy-one million, eight hundred eighty-one thousand, six hundred ninety-three".