637368049 has 2 divisors, whose sum is σ = 637368050. Its totient is φ = 637368048.

The previous prime is 637368041. The next prime is 637368133. The reversal of 637368049 is 940863736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 486864225 + 150503824 = 22065^2 + 12268^2 .

It is a cyclic number.

It is not a de Polignac number, because 637368049 - 2³ = 637368041 is a prime.

It is not a weakly prime, because it can be changed into another prime (637368041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318684024 + 318684025.

It is an arithmetic number, because the mean of its divisors is an integer number (318684025).

Almost surely, 2^637368049 is an apocalyptic number.

It is an amenable number.

637368049 is a deficient number, since it is larger than the sum of its proper divisors (1).

637368049 is an equidigital number, since it uses as much as digits as its factorization.

637368049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 637368049 is about 25246.1491915104. The cubic root of 637368049 is about 860.5909265696.

The spelling of 637368049 in words is "six hundred thirty-seven million, three hundred sixty-eight thousand, forty-nine".