18140127 has 4 divisors (see below), whose sum is σ = 24186840. Its totient is φ = 12093416.

The previous prime is 18140113. The next prime is 18140131. The reversal of 18140127 is 72104181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72104181 = 3 ⋅24034727.

It is a cyclic number.

It is not a de Polignac number, because 18140127 - 2⁶ = 18140063 is a prime.

It is a super-2 number, since 2×18140127² = 658128415152258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18140097 and 18140106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140137) 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, 3023352 + ... + 3023357.

It is an arithmetic number, because the mean of its divisors is an integer number (6046710).

Almost surely, 2^18140127 is an apocalyptic number.

18140127 is a deficient number, since it is larger than the sum of its proper divisors (6046713).

18140127 is an equidigital number, since it uses as much as digits as its factorization.

18140127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046712.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 18140127 is about 4259.1227970088. The cubic root of 18140127 is about 262.7524501077.

The spelling of 18140127 in words is "eighteen million, one hundred forty thousand, one hundred twenty-seven".