18568371413 has 8 divisors (see below), whose sum is σ = 19613104896. Its totient is φ = 17551497600.

The previous prime is 18568371403. The next prime is 18568371421. The reversal of 18568371413 is 31417386581.

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 18568371413 - 2³⁰ = 17494629589 is a prime.

It is a super-2 number, since 2×18568371413² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18568371403) 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, 6963548 + ... + 6966213.

It is an arithmetic number, because the mean of its divisors is an integer number (2451638112).

Almost surely, 2^18568371413 is an apocalyptic number.

It is an amenable number.

18568371413 is a deficient number, since it is larger than the sum of its proper divisors (1044733483).

18568371413 is a wasteful number, since it uses less digits than its factorization.

18568371413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13929835.

The product of its digits is 483840, while the sum is 47.

The spelling of 18568371413 in words is "eighteen billion, five hundred sixty-eight million, three hundred seventy-one thousand, four hundred thirteen".