19391400317 has 8 divisors (see below), whose sum is σ = 19516604832. Its totient is φ = 19266545200.

The previous prime is 19391400313. The next prime is 19391400331. The reversal of 19391400317 is 71300419391.

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 19391400317 - 2² = 19391400313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19391400311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24467 + ... + 198447.

It is an arithmetic number, because the mean of its divisors is an integer number (2439575604).

Almost surely, 2^19391400317 is an apocalyptic number.

It is an amenable number.

19391400317 is a deficient number, since it is larger than the sum of its proper divisors (125204515).

19391400317 is a wasteful number, since it uses less digits than its factorization.

19391400317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174699.

The product of its (nonzero) digits is 20412, while the sum is 38.

The spelling of 19391400317 in words is "nineteen billion, three hundred ninety-one million, four hundred thousand, three hundred seventeen".