18814129 has 4 divisors (see below), whose sum is σ = 18884340. Its totient is φ = 18743920.

The previous prime is 18814079. The next prime is 18814141. The reversal of 18814129 is 92141881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1575025 + 17239104 = 1255^2 + 4152^2 .

It is not a de Polignac number, because 18814129 - 2⁷ = 18814001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18814094 and 18814103.

It is not an unprimeable number, because it can be changed into a prime (18824129) 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, 34702 + ... + 35239.

It is an arithmetic number, because the mean of its divisors is an integer number (4721085).

Almost surely, 2^18814129 is an apocalyptic number.

It is an amenable number.

18814129 is a deficient number, since it is larger than the sum of its proper divisors (70211).

18814129 is an equidigital number, since it uses as much as digits as its factorization.

18814129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70210.

The product of its digits is 4608, while the sum is 34.

The square root of 18814129 is about 4337.5256771574. The cubic root of 18814129 is about 265.9671742334.

The spelling of 18814129 in words is "eighteen million, eight hundred fourteen thousand, one hundred twenty-nine".