18703745 has 8 divisors (see below), whose sum is σ = 22472640. Its totient is φ = 14944240.

The previous prime is 18703717. The next prime is 18703777. The reversal of 18703745 is 54730781.

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

It is not a de Polignac number, because 18703745 - 2¹⁶ = 18638209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3260 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^18703745 is an apocalyptic number.

It is an amenable number.

18703745 is a deficient number, since it is larger than the sum of its proper divisors (3768895).

18703745 is a wasteful number, since it uses less digits than its factorization.

18703745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 18703745 is about 4324.7826534983. The cubic root of 18703745 is about 265.4460034206.

The spelling of 18703745 in words is "eighteen million, seven hundred three thousand, seven hundred forty-five".