11917906319 has 8 divisors (see below), whose sum is σ = 13011501312. Its totient is φ = 10826002840.

The previous prime is 11917906307. The next prime is 11917906331. The reversal of 11917906319 is 91360971911.

It is an interprime number because it is at equal distance from previous prime (11917906307) and next prime (11917906331).

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 11917906319 - 2⁴ = 11917906303 is a prime.

It is a super-2 number, since 2×11917906319² (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 (11917906379) 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, 408119 + ... + 436344.

It is an arithmetic number, because the mean of its divisors is an integer number (1626437664).

Almost surely, 2^11917906319 is an apocalyptic number.

11917906319 is a deficient number, since it is larger than the sum of its proper divisors (1093594993).

11917906319 is a wasteful number, since it uses less digits than its factorization.

11917906319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845757.

The product of its (nonzero) digits is 91854, while the sum is 47.

The spelling of 11917906319 in words is "eleven billion, nine hundred seventeen million, nine hundred six thousand, three hundred nineteen".