18607145 has 8 divisors (see below), whose sum is σ = 22526856. Its totient is φ = 14753536.

The previous prime is 18607139. The next prime is 18607157. The reversal of 18607145 is 54170681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1459264 + 17147881 = 1208^2 + 4141^2 .

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 18607145 - 2¹⁰ = 18606121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15902 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (2815857).

Almost surely, 2^18607145 is an apocalyptic number.

It is an amenable number.

18607145 is a deficient number, since it is larger than the sum of its proper divisors (3919711).

18607145 is a wasteful number, since it uses less digits than its factorization.

18607145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33051.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18607145 is about 4313.6000046365. The cubic root of 18607145 is about 264.9882277908.

The spelling of 18607145 in words is "eighteen million, six hundred seven thousand, one hundred forty-five".