634102291 has 4 divisors (see below), whose sum is σ = 634436712. Its totient is φ = 633767872.

The previous prime is 634102283. The next prime is 634102307. The reversal of 634102291 is 192201436.

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 634102291 - 2³ = 634102283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634102691) 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, 164350 + ... + 168163.

It is an arithmetic number, because the mean of its divisors is an integer number (158609178).

Almost surely, 2^634102291 is an apocalyptic number.

634102291 is a deficient number, since it is larger than the sum of its proper divisors (334421).

634102291 is a wasteful number, since it uses less digits than its factorization.

634102291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334420.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 634102291 is about 25181.3877893972. The cubic root of 634102291 is about 859.1185718598.

The spelling of 634102291 in words is "six hundred thirty-four million, one hundred two thousand, two hundred ninety-one".