18142746 has 16 divisors (see below), whose sum is σ = 37171008. Its totient is φ = 5900000.

The previous prime is 18142717. The next prime is 18142753. The reversal of 18142746 is 64724181.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 36630 + ... + 37121.

It is an arithmetic number, because the mean of its divisors is an integer number (2323188).

Almost surely, 2^18142746 is an apocalyptic number.

18142746 is an abundant number, since it is smaller than the sum of its proper divisors (19028262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18142746 is a wasteful number, since it uses less digits than its factorization.

18142746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73797.

The product of its digits is 10752, while the sum is 33.

The square root of 18142746 is about 4259.4302435889. The cubic root of 18142746 is about 262.7650945534.

It can be divided in two parts, 1814 and 2746, that added together give a triangular number (4560 = T₉₅).

The spelling of 18142746 in words is "eighteen million, one hundred forty-two thousand, seven hundred forty-six".