13931772919 has 8 divisors (see below), whose sum is σ = 13979750000. Its totient is φ = 13883861376.

The previous prime is 13931772913. The next prime is 13931772931. The reversal of 13931772919 is 91927713931.

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 13931772919 - 2⁷ = 13931772791 is a prime.

It is a super-2 number, since 2×13931772919² (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 (13931772913) 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, 430207 + ... + 461455.

It is an arithmetic number, because the mean of its divisors is an integer number (1747468750).

Almost surely, 2^13931772919 is an apocalyptic number.

13931772919 is a deficient number, since it is larger than the sum of its proper divisors (47977081).

13931772919 is a wasteful number, since it uses less digits than its factorization.

13931772919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32769.

The product of its digits is 642978, while the sum is 52.

The spelling of 13931772919 in words is "thirteen billion, nine hundred thirty-one million, seven hundred seventy-two thousand, nine hundred nineteen".