19617498742 has 8 divisors (see below), whose sum is σ = 29427221232. Its totient is φ = 9808425000.

The previous prime is 19617498737. The next prime is 19617498773. The reversal of 19617498742 is 24789471691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77809 + ... + 212812.

It is an arithmetic number, because the mean of its divisors is an integer number (3678402654).

Almost surely, 2^19617498742 is an apocalyptic number.

19617498742 is a deficient number, since it is larger than the sum of its proper divisors (9809722490).

19617498742 is a wasteful number, since it uses less digits than its factorization.

19617498742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324374.

The product of its digits is 6096384, while the sum is 58.

The spelling of 19617498742 in words is "nineteen billion, six hundred seventeen million, four hundred ninety-eight thousand, seven hundred forty-two".