18242245 has 16 divisors (see below), whose sum is σ = 25175808. Its totient is φ = 12430080.

The previous prime is 18242209. The next prime is 18242249. The reversal of 18242245 is 54224281.

It is not a de Polignac number, because 18242245 - 2²¹ = 16145093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18242249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4285 + ... + 7405.

It is an arithmetic number, because the mean of its divisors is an integer number (1573488).

Almost surely, 2^18242245 is an apocalyptic number.

It is an amenable number.

18242245 is a deficient number, since it is larger than the sum of its proper divisors (6933563).

18242245 is a wasteful number, since it uses less digits than its factorization.

18242245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300.

The product of its digits is 5120, while the sum is 28.

The square root of 18242245 is about 4271.0941221191. The cubic root of 18242245 is about 263.2445738710.

The spelling of 18242245 in words is "eighteen million, two hundred forty-two thousand, two hundred forty-five".