634749000049 has 2 divisors, whose sum is σ = 634749000050. Its totient is φ = 634749000048.

The previous prime is 634749000029. The next prime is 634749000059. The reversal of 634749000049 is 940000947436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563603040225 + 71145959824 = 750735^2 + 266732^2 .

It is a cyclic number.

It is not a de Polignac number, because 634749000049 - 2³¹ = 632601516401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634748999972 and 634749000008.

It is not a weakly prime, because it can be changed into another prime (634749000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317374500024 + 317374500025.

It is an arithmetic number, because the mean of its divisors is an integer number (317374500025).

Almost surely, 2^634749000049 is an apocalyptic number.

It is an amenable number.

634749000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

634749000049 is an equidigital number, since it uses as much as digits as its factorization.

634749000049 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 spelling of 634749000049 in words is "six hundred thirty-four billion, seven hundred forty-nine million, forty-nine", and thus it is an aban number.