2642158481 has 2 divisors, whose sum is σ = 2642158482. Its totient is φ = 2642158480.

The previous prime is 2642158471. The next prime is 2642158517. The reversal of 2642158481 is 1848512462.

2642158481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2641034881 + 1123600 = 51391^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642158481 - 2⁶ = 2642158417 is a prime.

It is a super-2 number, since 2×2642158481² = 13962002877440454722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2642158471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321079240 + 1321079241.

It is an arithmetic number, because the mean of its divisors is an integer number (1321079241).

Almost surely, 2^2642158481 is an apocalyptic number.

It is an amenable number.

2642158481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642158481 is an equidigital number, since it uses as much as digits as its factorization.

2642158481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 41.

The square root of 2642158481 is about 51401.9307127660. The cubic root of 2642158481 is about 1382.4612104958.

The spelling of 2642158481 in words is "two billion, six hundred forty-two million, one hundred fifty-eight thousand, four hundred eighty-one".