3115691993 has 8 divisors (see below), whose sum is σ = 3183116160. Its totient is φ = 3048315120.

The previous prime is 3115691963. The next prime is 3115692071. The reversal of 3115691993 is 3991965113.

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 3115691993 - 2¹⁶ = 3115626457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3115691923) 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, 143003 + ... + 163343.

It is an arithmetic number, because the mean of its divisors is an integer number (397889520).

Almost surely, 2^3115691993 is an apocalyptic number.

It is an amenable number.

3115691993 is a deficient number, since it is larger than the sum of its proper divisors (67424167).

3115691993 is a wasteful number, since it uses less digits than its factorization.

3115691993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23647.

The product of its digits is 196830, while the sum is 47.

The square root of 3115691993 is about 55818.3840056303. The cubic root of 3115691993 is about 1460.5558640575. Note that the first 3 decimals are identical.

The spelling of 3115691993 in words is "three billion, one hundred fifteen million, six hundred ninety-one thousand, nine hundred ninety-three".