18023745 has 8 divisors (see below), whose sum is σ = 28838016. Its totient is φ = 9612656.

The previous prime is 18023729. The next prime is 18023777. The reversal of 18023745 is 54732081.

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 18023745 - 2⁴ = 18023729 is a prime.

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, 600777 + ... + 600806.

It is an arithmetic number, because the mean of its divisors is an integer number (3604752).

Almost surely, 2^18023745 is an apocalyptic number.

18023745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18023745 is a deficient number, since it is larger than the sum of its proper divisors (10814271).

18023745 is a wasteful number, since it uses less digits than its factorization.

18023745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201591.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 18023745 is about 4245.4381399333. The cubic root of 18023745 is about 262.1893286075.

The spelling of 18023745 in words is "eighteen million, twenty-three thousand, seven hundred forty-five".