18545457 has 8 divisors (see below), whose sum is σ = 28259776. Its totient is φ = 10597392.

The previous prime is 18545381. The next prime is 18545467. The reversal of 18545457 is 75454581.

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

It is not a de Polignac number, because 18545457 - 2⁸ = 18545201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18545467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441538 + ... + 441579.

It is an arithmetic number, because the mean of its divisors is an integer number (3532472).

Almost surely, 2^18545457 is an apocalyptic number.

It is an amenable number.

18545457 is a deficient number, since it is larger than the sum of its proper divisors (9714319).

18545457 is an equidigital number, since it uses as much as digits as its factorization.

18545457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883127.

The product of its digits is 112000, while the sum is 39.

The square root of 18545457 is about 4306.4436603769. The cubic root of 18545457 is about 264.6950663613.

It can be divided in two parts, 1 and 8545457, that added together give a palindrome (8545458).

The spelling of 18545457 in words is "eighteen million, five hundred forty-five thousand, four hundred fifty-seven".