18062493 has 4 divisors (see below), whose sum is σ = 24083328. Its totient is φ = 12041660.

The previous prime is 18062479. The next prime is 18062497. The reversal of 18062493 is 39426081.

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: 39426081 = 3 ⋅13142027.

It is a cyclic number.

It is not a de Polignac number, because 18062493 - 2⁴ = 18062477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18062497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010413 + ... + 3010418.

It is an arithmetic number, because the mean of its divisors is an integer number (6020832).

Almost surely, 2^18062493 is an apocalyptic number.

It is an amenable number.

18062493 is a deficient number, since it is larger than the sum of its proper divisors (6020835).

18062493 is an equidigital number, since it uses as much as digits as its factorization.

18062493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020834.

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

The square root of 18062493 is about 4249.9991764705. Note that the first 3 decimals coincide. The cubic root of 18062493 is about 262.3770816802.

The spelling of 18062493 in words is "eighteen million, sixty-two thousand, four hundred ninety-three".