18274245 has 16 divisors (see below), whose sum is σ = 31897152. Its totient is φ = 8860160.

The previous prime is 18274237. The next prime is 18274279. The reversal of 18274245 is 54247281.

It is not a de Polignac number, because 18274245 - 2³ = 18274237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55212 + ... + 55541.

It is an arithmetic number, because the mean of its divisors is an integer number (1993572).

Almost surely, 2^18274245 is an apocalyptic number.

18274245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18274245 is a deficient number, since it is larger than the sum of its proper divisors (13622907).

18274245 is a wasteful number, since it uses less digits than its factorization.

18274245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110772.

The product of its digits is 17920, while the sum is 33.

The square root of 18274245 is about 4274.8385934442. The cubic root of 18274245 is about 263.3984092049.

The spelling of 18274245 in words is "eighteen million, two hundred seventy-four thousand, two hundred forty-five".