19011720092 has 24 divisors (see below), whose sum is σ = 35327438496. Its totient is φ = 8921335808.

The previous prime is 19011720071. The next prime is 19011720097. The reversal of 19011720092 is 29002711091.

It is a super-2 number, since 2×19011720092² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19011720097) 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, 372008 + ... + 420015.

It is an arithmetic number, because the mean of its divisors is an integer number (1471976604).

Almost surely, 2^19011720092 is an apocalyptic number.

It is an amenable number.

19011720092 is a deficient number, since it is larger than the sum of its proper divisors (16315718404).

19011720092 is a wasteful number, since it uses less digits than its factorization.

19011720092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792397 (or 792395 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 32.

Subtracting 19011720092 from its reverse (29002711091), we obtain a palindrome (9990990999).

The spelling of 19011720092 in words is "nineteen billion, eleven million, seven hundred twenty thousand, ninety-two".