19949056631 has 8 divisors (see below), whose sum is σ = 23998865280. Its totient is φ = 16199233848.

The previous prime is 19949056613. The next prime is 19949056679. The reversal of 19949056631 is 13665094991.

It is a happy number.

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

It is not a de Polignac number, because 19949056631 - 2¹⁴ = 19949040247 is a prime.

It is a super-5 number, since 5×19949056631⁵ (a number of 53 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19949056331) 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, 74996321 + ... + 74996586.

It is an arithmetic number, because the mean of its divisors is an integer number (2999858160).

Almost surely, 2^19949056631 is an apocalyptic number.

19949056631 is a deficient number, since it is larger than the sum of its proper divisors (4049808649).

19949056631 is a wasteful number, since it uses less digits than its factorization.

19949056631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149992933.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The spelling of 19949056631 in words is "nineteen billion, nine hundred forty-nine million, fifty-six thousand, six hundred thirty-one".