19005368769 has 16 divisors (see below), whose sum is σ = 28165573440. Its totient is φ = 12665983680.

The previous prime is 19005368749. The next prime is 19005368777. The reversal of 19005368769 is 96786350091.

It is not a de Polignac number, because 19005368769 - 2⁵ = 19005368737 is a prime.

It is a super-2 number, since 2×19005368769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19005368749) 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, 35592 + ... + 198185.

It is an arithmetic number, because the mean of its divisors is an integer number (1760348340).

Almost surely, 2^19005368769 is an apocalyptic number.

It is an amenable number.

19005368769 is a deficient number, since it is larger than the sum of its proper divisors (9160204671).

19005368769 is a wasteful number, since it uses less digits than its factorization.

19005368769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236797 (or 236791 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 19005368769 in words is "nineteen billion, five million, three hundred sixty-eight thousand, seven hundred sixty-nine".