18254157 has 8 divisors (see below), whose sum is σ = 25397184. Its totient is φ = 11640288.

The previous prime is 18254153. The next prime is 18254177. The reversal of 18254157 is 75145281.

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

It is not a de Polignac number, because 18254157 - 2² = 18254153 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18254153) by changing a digit.

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, 132208 + ... + 132345.

It is an arithmetic number, because the mean of its divisors is an integer number (3174648).

Almost surely, 2^18254157 is an apocalyptic number.

It is an amenable number.

18254157 is a deficient number, since it is larger than the sum of its proper divisors (7143027).

18254157 is a wasteful number, since it uses less digits than its factorization.

18254157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264579.

The product of its digits is 11200, while the sum is 33.

The square root of 18254157 is about 4272.4883850047. The cubic root of 18254157 is about 263.3018600780.

The spelling of 18254157 in words is "eighteen million, two hundred fifty-four thousand, one hundred fifty-seven".