634306380953 has 4 divisors (see below), whose sum is σ = 724921578240. Its totient is φ = 543691183668.

The previous prime is 634306380943. The next prime is 634306380971. The reversal of 634306380953 is 359083603436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634306380953 - 2²⁰ = 634305332377 is a prime.

It is a super-2 number, since 2×634306380953² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (634306380943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45307598633 + ... + 45307598646.

It is an arithmetic number, because the mean of its divisors is an integer number (181230394560).

Almost surely, 2^634306380953 is an apocalyptic number.

It is an amenable number.

634306380953 is a deficient number, since it is larger than the sum of its proper divisors (90615197287).

634306380953 is an equidigital number, since it uses as much as digits as its factorization.

634306380953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90615197286.

The product of its (nonzero) digits is 4199040, while the sum is 50.

The spelling of 634306380953 in words is "six hundred thirty-four billion, three hundred six million, three hundred eighty thousand, nine hundred fifty-three".