19739269492 has 24 divisors (see below), whose sum is σ = 35036017632. Its totient is φ = 9729496800.

The previous prime is 19739269469. The next prime is 19739269493. The reversal of 19739269492 is 29496293791.

It is a self number, because there is not a number n which added to its sum of digits gives 19739269492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19739269493) 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, 88567 + ... + 217537.

It is an arithmetic number, because the mean of its divisors is an integer number (1459834068).

Almost surely, 2^19739269492 is an apocalyptic number.

It is an amenable number.

19739269492 is a deficient number, since it is larger than the sum of its proper divisors (15296748140).

19739269492 is a wasteful number, since it uses less digits than its factorization.

19739269492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129519 (or 129517 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 61.

The spelling of 19739269492 in words is "nineteen billion, seven hundred thirty-nine million, two hundred sixty-nine thousand, four hundred ninety-two".