18435742 has 16 divisors (see below), whose sum is σ = 31076640. Its totient is φ = 8138592.

The previous prime is 18435733. The next prime is 18435749. The reversal of 18435742 is 24753481.

It is a junction number, because it is equal to n+sod(n) for n = 18435698 and 18435707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18435749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14817 + ... + 16012.

It is an arithmetic number, because the mean of its divisors is an integer number (1942290).

Almost surely, 2^18435742 is an apocalyptic number.

18435742 is a deficient number, since it is larger than the sum of its proper divisors (12640898).

18435742 is a wasteful number, since it uses less digits than its factorization.

18435742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30867.

The product of its digits is 26880, while the sum is 34.

The square root of 18435742 is about 4293.6862950150. The cubic root of 18435742 is about 264.1720545871.

The spelling of 18435742 in words is "eighteen million, four hundred thirty-five thousand, seven hundred forty-two".