18080387 has 8 divisors (see below), whose sum is σ = 19533696. Its totient is φ = 16636032.

The previous prime is 18080351. The next prime is 18080393. The reversal of 18080387 is 78308081.

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 18080387 - 2⁸ = 18080131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18080327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2318 + ... + 6444.

It is an arithmetic number, because the mean of its divisors is an integer number (2441712).

Almost surely, 2^18080387 is an apocalyptic number.

18080387 is a deficient number, since it is larger than the sum of its proper divisors (1453309).

18080387 is a wasteful number, since it uses less digits than its factorization.

18080387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 18080387 is about 4252.1038322224. The cubic root of 18080387 is about 262.4636962644.

The spelling of 18080387 in words is "eighteen million, eighty thousand, three hundred eighty-seven".