2149374691 has 2 divisors, whose sum is σ = 2149374692. Its totient is φ = 2149374690.

The previous prime is 2149374683. The next prime is 2149374707. The reversal of 2149374691 is 1964739412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2149374691 - 2³ = 2149374683 is a prime.

It is a super-2 number, since 2×2149374691² = 9239623124622690962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2149374631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074687345 + 1074687346.

It is an arithmetic number, because the mean of its divisors is an integer number (1074687346).

Almost surely, 2^2149374691 is an apocalyptic number.

2149374691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149374691 is an equidigital number, since it uses as much as digits as its factorization.

2149374691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 2149374691 is about 46361.3491067721. The cubic root of 2149374691 is about 1290.5377424771.

The spelling of 2149374691 in words is "two billion, one hundred forty-nine million, three hundred seventy-four thousand, six hundred ninety-one".