18045193 has 8 divisors (see below), whose sum is σ = 19608320. Its totient is φ = 16543440.

The previous prime is 18045173. The next prime is 18045197. The reversal of 18045193 is 39154081.

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 18045193 - 2¹³ = 18037001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18045197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14730 + ... + 15907.

It is an arithmetic number, because the mean of its divisors is an integer number (2451040).

Almost surely, 2^18045193 is an apocalyptic number.

It is an amenable number.

18045193 is a deficient number, since it is larger than the sum of its proper divisors (1563127).

18045193 is a wasteful number, since it uses less digits than its factorization.

18045193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30687.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 18045193 is about 4247.9633943809. The cubic root of 18045193 is about 262.2932879047.

The spelling of 18045193 in words is "eighteen million, forty-five thousand, one hundred ninety-three".