919139931919 has 16 divisors (see below), whose sum is σ = 1038362677920. Its totient is φ = 805921768960.

The previous prime is 919139931911. The next prime is 919139931943.

919139931919 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 919139931919 - 2³ = 919139931911 is a prime.

It is a super-2 number, since 2×919139931919² (a number of 25 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 (919139931911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207702 + ... + 1815715.

It is an arithmetic number, because the mean of its divisors is an integer number (64897667370).

Almost surely, 2^919139931919 is an apocalyptic number.

919139931919 is a deficient number, since it is larger than the sum of its proper divisors (119222746001).

919139931919 is a wasteful number, since it uses less digits than its factorization.

919139931919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024410.

The product of its digits is 4782969, while the sum is 64.

The spelling of 919139931919 in words is "nine hundred nineteen billion, one hundred thirty-nine million, nine hundred thirty-one thousand, nine hundred nineteen".