19468942818 has 32 divisors (see below), whose sum is σ = 41953161600. Its totient is φ = 5987579136.

The previous prime is 19468942813. The next prime is 19468942849. The reversal of 19468942818 is 81824986491.

It is a super-2 number, since 2×19468942818² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19468942813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107443 + ... + 224681.

It is an arithmetic number, because the mean of its divisors is an integer number (1311036300).

Almost surely, 2^19468942818 is an apocalyptic number.

19468942818 is an abundant number, since it is smaller than the sum of its proper divisors (22484218782).

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

19468942818 is a wasteful number, since it uses less digits than its factorization.

19468942818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119386.

The product of its digits is 7962624, while the sum is 60.

The spelling of 19468942818 in words is "nineteen billion, four hundred sixty-eight million, nine hundred forty-two thousand, eight hundred eighteen".