18623134 has 4 divisors (see below), whose sum is σ = 27934704. Its totient is φ = 9311566.

The previous prime is 18623131. The next prime is 18623159. The reversal of 18623134 is 43132681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43132681 = 2083 ⋅20707.

It is a super-2 number, since 2×18623134² = 693642239963912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18623131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4655782 + ... + 4655785.

It is an arithmetic number, because the mean of its divisors is an integer number (6983676).

Almost surely, 2^18623134 is an apocalyptic number.

18623134 is a deficient number, since it is larger than the sum of its proper divisors (9311570).

18623134 is an equidigital number, since it uses as much as digits as its factorization.

18623134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9311569.

The product of its digits is 3456, while the sum is 28.

The square root of 18623134 is about 4315.4529310375. The cubic root of 18623134 is about 265.0641069540.

The spelling of 18623134 in words is "eighteen million, six hundred twenty-three thousand, one hundred thirty-four".