18073842 has 16 divisors (see below), whose sum is σ = 36256032. Its totient is φ = 6006560.

The previous prime is 18073823. The next prime is 18073843. The reversal of 18073842 is 24837081.

It is not an unprimeable number, because it can be changed into a prime (18073843) 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, 2259 + ... + 6422.

It is an arithmetic number, because the mean of its divisors is an integer number (2266002).

Almost surely, 2^18073842 is an apocalyptic number.

18073842 is an abundant number, since it is smaller than the sum of its proper divisors (18182190).

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

18073842 is a wasteful number, since it uses less digits than its factorization.

18073842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9033.

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

The square root of 18073842 is about 4251.3341435366. The cubic root of 18073842 is about 262.4320223071.

It can be divided in two parts, 18073 and 842, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 18073842 in words is "eighteen million, seventy-three thousand, eight hundred forty-two".