18242545 has 8 divisors (see below), whose sum is σ = 21931200. Its totient is φ = 14567280.

The previous prime is 18242507. The next prime is 18242551. The reversal of 18242545 is 54524281.

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

It is not a de Polignac number, because 18242545 - 2¹⁷ = 18111473 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, 51 + ... + 6040.

It is an arithmetic number, because the mean of its divisors is an integer number (2741400).

Almost surely, 2^18242545 is an apocalyptic number.

It is an amenable number.

18242545 is a deficient number, since it is larger than the sum of its proper divisors (3688655).

18242545 is an equidigital number, since it uses as much as digits as its factorization.

18242545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695.

The product of its digits is 12800, while the sum is 31.

The square root of 18242545 is about 4271.1292417814. The cubic root of 18242545 is about 263.2460169123.

The spelling of 18242545 in words is "eighteen million, two hundred forty-two thousand, five hundred forty-five".