18968087 has 8 divisors (see below), whose sum is σ = 19813200. Its totient is φ = 18140544.

The previous prime is 18968069. The next prime is 18968111. The reversal of 18968087 is 78086981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18968087 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 (14968087) 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, 2162 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (2476650).

Almost surely, 2^18968087 is an apocalyptic number.

18968087 is a deficient number, since it is larger than the sum of its proper divisors (845113).

18968087 is an equidigital number, since it uses as much as digits as its factorization.

18968087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 18968087 is about 4355.2367329458. The cubic root of 18968087 is about 266.6906834272.

The spelling of 18968087 in words is "eighteen million, nine hundred sixty-eight thousand, eighty-seven".