19272919292 has 24 divisors (see below), whose sum is σ = 36801085440. Its totient is φ = 8758672560.

The previous prime is 19272919279. The next prime is 19272919313. The reversal of 19272919292 is 29291927291.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194309 + ... + 276227.

It is an arithmetic number, because the mean of its divisors is an integer number (1533378560).

Almost surely, 2^19272919292 is an apocalyptic number.

It is an amenable number.

19272919292 is a deficient number, since it is larger than the sum of its proper divisors (17528166148).

19272919292 is a wasteful number, since it uses less digits than its factorization.

19272919292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87281 (or 87279 counting only the distinct ones).

The product of its digits is 734832, while the sum is 53.

The spelling of 19272919292 in words is "nineteen billion, two hundred seventy-two million, nine hundred nineteen thousand, two hundred ninety-two".