18393145 has 8 divisors (see below), whose sum is σ = 22196160. Its totient is φ = 14631600.

The previous prime is 18393131. The next prime is 18393157. The reversal of 18393145 is 54139381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18393145 - 2⁵ = 18393113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18393145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9381 + ... + 11170.

It is an arithmetic number, because the mean of its divisors is an integer number (2774520).

Almost surely, 2^18393145 is an apocalyptic number.

It is an amenable number.

18393145 is a deficient number, since it is larger than the sum of its proper divisors (3803015).

18393145 is a wasteful number, since it uses less digits than its factorization.

18393145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20735.

The product of its digits is 12960, while the sum is 34.

The square root of 18393145 is about 4288.7230034126. The cubic root of 18393145 is about 263.9684353523.

The spelling of 18393145 in words is "eighteen million, three hundred ninety-three thousand, one hundred forty-five".