18150157 has 4 divisors (see below), whose sum is σ = 18245376. Its totient is φ = 18054940.

The previous prime is 18150109. The next prime is 18150161. The reversal of 18150157 is 75105181.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75105181 = 137 ⋅548213.

It is a cyclic number.

It is not a de Polignac number, because 18150157 - 2⁷ = 18150029 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 (18159157) 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, 47323 + ... + 47704.

It is an arithmetic number, because the mean of its divisors is an integer number (4561344).

Almost surely, 2^18150157 is an apocalyptic number.

It is an amenable number.

18150157 is a deficient number, since it is larger than the sum of its proper divisors (95219).

18150157 is an equidigital number, since it uses as much as digits as its factorization.

18150157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95218.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 18150157 is about 4260.3001068000. The cubic root of 18150157 is about 262.8008680249.

The spelling of 18150157 in words is "eighteen million, one hundred fifty thousand, one hundred fifty-seven".