19142868764 has 12 divisors (see below), whose sum is σ = 33506923464. Its totient is φ = 9569462064.

The previous prime is 19142868749. The next prime is 19142868769. The reversal of 19142868764 is 46786824191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19142868769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471134 + ... + 510149.

It is an arithmetic number, because the mean of its divisors is an integer number (2792243622).

Almost surely, 2^19142868764 is an apocalyptic number.

It is an amenable number.

19142868764 is a deficient number, since it is larger than the sum of its proper divisors (14364054700).

19142868764 is a wasteful number, since it uses less digits than its factorization.

19142868764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986164 (or 986162 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The spelling of 19142868764 in words is "nineteen billion, one hundred forty-two million, eight hundred sixty-eight thousand, seven hundred sixty-four".