18875087 has 8 divisors (see below), whose sum is σ = 23532672. Its totient is φ = 14707800.

The previous prime is 18875081. The next prime is 18875107. The reversal of 18875087 is 78057881.

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 18875087 - 2⁴ = 18875071 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 (18875081) 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, 122489 + ... + 122642.

It is an arithmetic number, because the mean of its divisors is an integer number (2941584).

Almost surely, 2^18875087 is an apocalyptic number.

18875087 is a deficient number, since it is larger than the sum of its proper divisors (4657585).

18875087 is a wasteful number, since it uses less digits than its factorization.

18875087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245149.

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 18875087 is about 4344.5468118090. The cubic root of 18875087 is about 266.2541101587.

The spelling of 18875087 in words is "eighteen million, eight hundred seventy-five thousand, eighty-seven".