634862863492 has 24 divisors (see below), whose sum is σ = 1305242531712. Its totient is φ = 266376026400.

The previous prime is 634862863487. The next prime is 634862863493. The reversal of 634862863492 is 294368268436.

It is a self number, because there is not a number n which added to its sum of digits gives 634862863492.

It is not an unprimeable number, because it can be changed into a prime (634862863493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554949484 + ... + 554950627.

It is an arithmetic number, because the mean of its divisors is an integer number (54385105488).

Almost surely, 2^634862863492 is an apocalyptic number.

It is an amenable number.

634862863492 is an abundant number, since it is smaller than the sum of its proper divisors (670379668220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634862863492 is a wasteful number, since it uses less digits than its factorization.

634862863492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109900139 (or 1109900137 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 61.

The spelling of 634862863492 in words is "six hundred thirty-four billion, eight hundred sixty-two million, eight hundred sixty-three thousand, four hundred ninety-two".