2541631493 has 2 divisors, whose sum is σ = 2541631494. Its totient is φ = 2541631492.

The previous prime is 2541631471. The next prime is 2541631513. The reversal of 2541631493 is 3941361452.

2541631493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1526699329 + 1014932164 = 39073^2 + 31858^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541631493 - 2⁸ = 2541631237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2541631093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270815746 + 1270815747.

It is an arithmetic number, because the mean of its divisors is an integer number (1270815747).

Almost surely, 2^2541631493 is an apocalyptic number.

It is an amenable number.

2541631493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541631493 is an equidigital number, since it uses as much as digits as its factorization.

2541631493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 2541631493 is about 50414.5960313082. The cubic root of 2541631493 is about 1364.7010563347.

The spelling of 2541631493 in words is "two billion, five hundred forty-one million, six hundred thirty-one thousand, four hundred ninety-three".