2637534421 has 2 divisors, whose sum is σ = 2637534422. Its totient is φ = 2637534420.

The previous prime is 2637534413. The next prime is 2637534433. The reversal of 2637534421 is 1244357362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2402372196 + 235162225 = 49014^2 + 15335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2637534421 - 2³ = 2637534413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2637534121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318767210 + 1318767211.

It is an arithmetic number, because the mean of its divisors is an integer number (1318767211).

Almost surely, 2^2637534421 is an apocalyptic number.

It is an amenable number.

2637534421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2637534421 is an equidigital number, since it uses as much as digits as its factorization.

2637534421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 37.

The square root of 2637534421 is about 51356.9315769546. The cubic root of 2637534421 is about 1381.6542545548.

The spelling of 2637534421 in words is "two billion, six hundred thirty-seven million, five hundred thirty-four thousand, four hundred twenty-one".