19121012092 has 48 divisors (see below), whose sum is σ = 41608369600. Its totient is φ = 7486359552.

The previous prime is 19121012087. The next prime is 19121012167. The reversal of 19121012092 is 29021012191.

It is a super-2 number, since 2×19121012092² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 19121012092.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235467 + ... + 306082.

Almost surely, 2^19121012092 is an apocalyptic number.

It is an amenable number.

19121012092 is an abundant number, since it is smaller than the sum of its proper divisors (22487357508).

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

19121012092 is a wasteful number, since it uses less digits than its factorization.

19121012092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541670 (or 541668 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

Subtracting 19121012092 from its reverse (29021012191), we obtain a palindrome (9900000099).

It can be divided in two parts, 191210 and 12092, that added together give a palindrome (203302).

The spelling of 19121012092 in words is "nineteen billion, one hundred twenty-one million, twelve thousand, ninety-two".