18868967 has 16 divisors (see below), whose sum is σ = 21010080. Its totient is φ = 16837632.

The previous prime is 18868961. The next prime is 18868973. The reversal of 18868967 is 76986881.

It is an interprime number because it is at equal distance from previous prime (18868961) and next prime (18868973).

It is a cyclic number.

It is not a de Polignac number, because 18868967 - 2⁸ = 18868711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868961) 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 15 ways as a sum of consecutive naturals, for example, 55823 + ... + 56159.

It is an arithmetic number, because the mean of its divisors is an integer number (1313130).

Almost surely, 2^18868967 is an apocalyptic number.

18868967 is a deficient number, since it is larger than the sum of its proper divisors (2141113).

18868967 is a wasteful number, since it uses less digits than its factorization.

18868967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 1161216, while the sum is 53.

The square root of 18868967 is about 4343.8424234772. The cubic root of 18868967 is about 266.2253305774.

The spelling of 18868967 in words is "eighteen million, eight hundred sixty-eight thousand, nine hundred sixty-seven".