19135900968 has 48 divisors (see below), whose sum is σ = 49432811040. Its totient is φ = 6172863840.

The previous prime is 19135900967. The next prime is 19135900969. The reversal of 19135900968 is 86900953191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19135900967) and next prime (19135900969).

It is a self number, because there is not a number n which added to its sum of digits gives 19135900968.

It is not an unprimeable number, because it can be changed into a prime (19135900967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391780 + ... + 437907.

It is an arithmetic number, because the mean of its divisors is an integer number (1029850230).

Almost surely, 2^19135900968 is an apocalyptic number.

It is an amenable number.

19135900968 is an abundant number, since it is smaller than the sum of its proper divisors (30296910072).

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

19135900968 is a wasteful number, since it uses less digits than its factorization.

19135900968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829758 (or 829723 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 19135900968 in words is "nineteen billion, one hundred thirty-five million, nine hundred thousand, nine hundred sixty-eight".