19873349431 has 8 divisors (see below), whose sum is σ = 21899791760. Its totient is φ = 17918010432.

The previous prime is 19873349411. The next prime is 19873349467. The reversal of 19873349431 is 13494337891.

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

It is a cyclic number.

It is not a de Polignac number, because 19873349431 - 2¹¹ = 19873347383 is a prime.

It is a super-2 number, since 2×19873349431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19873349411) 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, 17775246 + ... + 17776363.

It is an arithmetic number, because the mean of its divisors is an integer number (2737473970).

Almost surely, 2^19873349431 is an apocalyptic number.

19873349431 is a deficient number, since it is larger than the sum of its proper divisors (2026442329).

19873349431 is a wasteful number, since it uses less digits than its factorization.

19873349431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35551665.

The product of its digits is 1959552, while the sum is 52.

The spelling of 19873349431 in words is "nineteen billion, eight hundred seventy-three million, three hundred forty-nine thousand, four hundred thirty-one".