634301499138 has 16 divisors (see below), whose sum is σ = 1270194730560. Its totient is φ = 211168544336.

The previous prime is 634301499131. The next prime is 634301499149. The reversal of 634301499138 is 831994103436.

It is not an unprimeable number, because it can be changed into a prime (634301499131) 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, 66316998 + ... + 66326561.

It is an arithmetic number, because the mean of its divisors is an integer number (79387170660).

Almost surely, 2^634301499138 is an apocalyptic number.

634301499138 is an abundant number, since it is smaller than the sum of its proper divisors (635893231422).

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

634301499138 is a wasteful number, since it uses less digits than its factorization.

634301499138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132644361.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 634301499138 in words is "six hundred thirty-four billion, three hundred one million, four hundred ninety-nine thousand, one hundred thirty-eight".