18750087 has 6 divisors (see below), whose sum is σ = 27083472. Its totient is φ = 12500052.

The previous prime is 18750047. The next prime is 18750089. The reversal of 18750087 is 78005781.

It is not a de Polignac number, because 18750087 - 2⁷ = 18749959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1041663 + ... + 1041680.

It is an arithmetic number, because the mean of its divisors is an integer number (4513912).

Almost surely, 2^18750087 is an apocalyptic number.

18750087 is a deficient number, since it is larger than the sum of its proper divisors (8333385).

18750087 is a wasteful number, since it uses less digits than its factorization.

18750087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083349 (or 2083346 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 18750087 is about 4330.1370648052. The cubic root of 18750087 is about 265.6650531897.

The spelling of 18750087 in words is "eighteen million, seven hundred fifty thousand, eighty-seven".