634393051 has 4 divisors (see below), whose sum is σ = 643861672. Its totient is φ = 624924432.

The previous prime is 634393043. The next prime is 634393057. The reversal of 634393051 is 150393436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634393051 - 2³ = 634393043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634392998 and 634393016.

It is not an unprimeable number, because it can be changed into a prime (634393057) 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, 4734210 + ... + 4734343.

It is an arithmetic number, because the mean of its divisors is an integer number (160965418).

Almost surely, 2^634393051 is an apocalyptic number.

634393051 is a deficient number, since it is larger than the sum of its proper divisors (9468621).

634393051 is an equidigital number, since it uses as much as digits as its factorization.

634393051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9468620.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 634393051 is about 25187.1604393985. The cubic root of 634393051 is about 859.2498646332.

The spelling of 634393051 in words is "six hundred thirty-four million, three hundred ninety-three thousand, fifty-one".