634397130842 has 8 divisors (see below), whose sum is σ = 952703493600. Its totient is φ = 316829299644.

The previous prime is 634397130841. The next prime is 634397130869. The reversal of 634397130842 is 248031793436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×634397130842⁴ (a number of 48 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (634397130841) 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, 184630742 + ... + 184634177.

It is an arithmetic number, because the mean of its divisors is an integer number (119087936700).

Almost surely, 2^634397130842 is an apocalyptic number.

634397130842 is a deficient number, since it is larger than the sum of its proper divisors (318306362758).

634397130842 is a wasteful number, since it uses less digits than its factorization.

634397130842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369265780.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 634397130842 in words is "six hundred thirty-four billion, three hundred ninety-seven million, one hundred thirty thousand, eight hundred forty-two".