634262401049 has 2 divisors, whose sum is σ = 634262401050. Its totient is φ = 634262401048.

The previous prime is 634262401021. The next prime is 634262401057. The reversal of 634262401049 is 940104262436.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584246209600 + 50016191449 = 764360^2 + 223643^2 .

It is a cyclic number.

It is not a de Polignac number, because 634262401049 - 2¹⁶ = 634262335513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634262400997 and 634262401015.

It is not a weakly prime, because it can be changed into another prime (634262401009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317131200524 + 317131200525.

It is an arithmetic number, because the mean of its divisors is an integer number (317131200525).

Almost surely, 2^634262401049 is an apocalyptic number.

It is an amenable number.

634262401049 is a deficient number, since it is larger than the sum of its proper divisors (1).

634262401049 is an equidigital number, since it uses as much as digits as its factorization.

634262401049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 634262401049 in words is "six hundred thirty-four billion, two hundred sixty-two million, four hundred one thousand, forty-nine".