18159742 has 16 divisors (see below), whose sum is σ = 29406240. Its totient is φ = 8384992.

The previous prime is 18159737. The next prime is 18159749. The reversal of 18159742 is 24795181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18159749) 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, 5473 + ... + 8140.

It is an arithmetic number, because the mean of its divisors is an integer number (1837890).

Almost surely, 2^18159742 is an apocalyptic number.

18159742 is a deficient number, since it is larger than the sum of its proper divisors (11246498).

18159742 is a wasteful number, since it uses less digits than its factorization.

18159742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13667.

The product of its digits is 20160, while the sum is 37.

The square root of 18159742 is about 4261.4248790751. The cubic root of 18159742 is about 262.8471211241.

The spelling of 18159742 in words is "eighteen million, one hundred fifty-nine thousand, seven hundred forty-two".