18616323387 has 8 divisors (see below), whose sum is σ = 24827106304. Its totient is φ = 12408211368.

The previous prime is 18616323359. The next prime is 18616323413. The reversal of 18616323387 is 78332361681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18616323387 - 2¹² = 18616319291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18616323317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651403 + ... + 679380.

It is an arithmetic number, because the mean of its divisors is an integer number (3103388288).

Almost surely, 2^18616323387 is an apocalyptic number.

18616323387 is a deficient number, since it is larger than the sum of its proper divisors (6210782917).

18616323387 is a wasteful number, since it uses less digits than its factorization.

18616323387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335449.

The product of its digits is 870912, while the sum is 48.

The spelling of 18616323387 in words is "eighteen billion, six hundred sixteen million, three hundred twenty-three thousand, three hundred eighty-seven".