2149156579 has 2 divisors, whose sum is σ = 2149156580. Its totient is φ = 2149156578.

The previous prime is 2149156577. The next prime is 2149156631. The reversal of 2149156579 is 9756519412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2149156579 - 2¹ = 2149156577 is a prime.

Together with 2149156577, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2149156571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074578289 + 1074578290.

It is an arithmetic number, because the mean of its divisors is an integer number (1074578290).

Almost surely, 2^2149156579 is an apocalyptic number.

2149156579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149156579 is an equidigital number, since it uses as much as digits as its factorization.

2149156579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The square root of 2149156579 is about 46358.9967428114. The cubic root of 2149156579 is about 1290.4940877200.

The spelling of 2149156579 in words is "two billion, one hundred forty-nine million, one hundred fifty-six thousand, five hundred seventy-nine".