18124774 has 8 divisors (see below), whose sum is σ = 27244008. Its totient is φ = 9043440.

The previous prime is 18124763. The next prime is 18124789. The reversal of 18124774 is 47742181.

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

It is a congruent number.

It is an unprimeable number.

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, 8247 + ... + 10210.

It is an arithmetic number, because the mean of its divisors is an integer number (3405501).

Almost surely, 2^18124774 is an apocalyptic number.

18124774 is a deficient number, since it is larger than the sum of its proper divisors (9119234).

18124774 is a wasteful number, since it uses less digits than its factorization.

18124774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18950.

The product of its digits is 12544, while the sum is 34.

The square root of 18124774 is about 4257.3200490449. The cubic root of 18124774 is about 262.6783018400.

The spelling of 18124774 in words is "eighteen million, one hundred twenty-four thousand, seven hundred seventy-four".