18088545 has 8 divisors (see below), whose sum is σ = 28941696. Its totient is φ = 9647216.

The previous prime is 18088541. The next prime is 18088573. The reversal of 18088545 is 54588081.

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 18088545 - 2² = 18088541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18088541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602937 + ... + 602966.

It is an arithmetic number, because the mean of its divisors is an integer number (3617712).

Almost surely, 2^18088545 is an apocalyptic number.

18088545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18088545 is a deficient number, since it is larger than the sum of its proper divisors (10853151).

18088545 is a wasteful number, since it uses less digits than its factorization.

18088545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205911.

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 18088545 is about 4253.0630138760. The cubic root of 18088545 is about 262.5031654947.

The spelling of 18088545 in words is "eighteen million, eighty-eight thousand, five hundred forty-five".