18174742 has 16 divisors (see below), whose sum is σ = 28248192. Its totient is φ = 8760960.

The previous prime is 18174727. The next prime is 18174743. The reversal of 18174742 is 24747181.

It is a junction number, because it is equal to n+sod(n) for n = 18174698 and 18174707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18174743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26508 + ... + 27184.

It is an arithmetic number, because the mean of its divisors is an integer number (1765512).

Almost surely, 2^18174742 is an apocalyptic number.

18174742 is a deficient number, since it is larger than the sum of its proper divisors (10073450).

18174742 is a wasteful number, since it uses less digits than its factorization.

18174742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143.

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

The square root of 18174742 is about 4263.1844904953. The cubic root of 18174742 is about 262.9194720373.

The spelling of 18174742 in words is "eighteen million, one hundred seventy-four thousand, seven hundred forty-two".