2158614641 has 2 divisors, whose sum is σ = 2158614642. Its totient is φ = 2158614640.

The previous prime is 2158614631. The next prime is 2158614649. The reversal of 2158614641 is 1464168512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2144060416 + 14554225 = 46304^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158614641 - 2²² = 2154420337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2158614595 and 2158614604.

It is not a weakly prime, because it can be changed into another prime (2158614649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079307320 + 1079307321.

It is an arithmetic number, because the mean of its divisors is an integer number (1079307321).

Almost surely, 2^2158614641 is an apocalyptic number.

It is an amenable number.

2158614641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158614641 is an equidigital number, since it uses as much as digits as its factorization.

2158614641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 38.

The square root of 2158614641 is about 46460.8936741428. The cubic root of 2158614641 is about 1292.3843970000.

The spelling of 2158614641 in words is "two billion, one hundred fifty-eight million, six hundred fourteen thousand, six hundred forty-one".