18134493 has 16 divisors (see below), whose sum is σ = 27410880. Its totient is φ = 10571904.

The previous prime is 18134491. The next prime is 18134503. The reversal of 18134493 is 39443181.

It is not a de Polignac number, because 18134493 - 2¹ = 18134491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18134491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11496 + ... + 12977.

It is an arithmetic number, because the mean of its divisors is an integer number (1713180).

Almost surely, 2^18134493 is an apocalyptic number.

18134493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18134493 is a deficient number, since it is larger than the sum of its proper divisors (9276387).

18134493 is a wasteful number, since it uses less digits than its factorization.

18134493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24508.

The product of its digits is 10368, while the sum is 33.

The square root of 18134493 is about 4258.4613418464. The cubic root of 18134493 is about 262.7252452157.

The spelling of 18134493 in words is "eighteen million, one hundred thirty-four thousand, four hundred ninety-three".