19090909092 has 48 divisors (see below), whose sum is σ = 45771747840. Its totient is φ = 6188620032.

The previous prime is 19090909021. The next prime is 19090909093. The reversal of 19090909092 is 29090909091.

It is not an unprimeable number, because it can be changed into a prime (19090909093) 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, 1010509 + ... + 1029227.

It is an arithmetic number, because the mean of its divisors is an integer number (953578080).

Almost surely, 2^19090909092 is an apocalyptic number.

19090909092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19090909092 is an abundant number, since it is smaller than the sum of its proper divisors (26680838748).

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

19090909092 is a wasteful number, since it uses less digits than its factorization.

19090909092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21060 (or 21058 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 48.

Subtracting 19090909092 from its reverse (29090909091), we obtain a palindrome (9999999999).

The spelling of 19090909092 in words is "nineteen billion, ninety million, nine hundred nine thousand, ninety-two".