18742593 has 8 divisors (see below), whose sum is σ = 25032256. Its totient is φ = 12474000.

The previous prime is 18742583. The next prime is 18742597. The reversal of 18742593 is 39524781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18742593 - 2²⁴ = 1965377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18742597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058 + ... + 6843.

It is an arithmetic number, because the mean of its divisors is an integer number (3129032).

Almost surely, 2^18742593 is an apocalyptic number.

It is an amenable number.

18742593 is a deficient number, since it is larger than the sum of its proper divisors (6289663).

18742593 is an equidigital number, since it uses as much as digits as its factorization.

18742593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535.

The product of its digits is 60480, while the sum is 39.

The square root of 18742593 is about 4329.2716477486. The cubic root of 18742593 is about 265.6296549680.

The spelling of 18742593 in words is "eighteen million, seven hundred forty-two thousand, five hundred ninety-three".