18463157 has 4 divisors (see below), whose sum is σ = 18480096. Its totient is φ = 18446220.

The previous prime is 18463141. The next prime is 18463163. The reversal of 18463157 is 75136481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18463157 - 2⁴ = 18463141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18463177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6713 + ... + 9054.

It is an arithmetic number, because the mean of its divisors is an integer number (4620024).

Almost surely, 2^18463157 is an apocalyptic number.

It is an amenable number.

18463157 is a deficient number, since it is larger than the sum of its proper divisors (16939).

18463157 is a wasteful number, since it uses less digits than its factorization.

18463157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938.

The product of its digits is 20160, while the sum is 35.

The square root of 18463157 is about 4296.8775872719. The cubic root of 18463157 is about 264.3029360373.

The spelling of 18463157 in words is "eighteen million, four hundred sixty-three thousand, one hundred fifty-seven".