18097642 has 16 divisors (see below), whose sum is σ = 28426752. Its totient is φ = 8624880.

The previous prime is 18097637. The next prime is 18097669. The reversal of 18097642 is 24679081.

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, 17767 + ... + 18757.

It is an arithmetic number, because the mean of its divisors is an integer number (1776672).

Almost surely, 2^18097642 is an apocalyptic number.

18097642 is a deficient number, since it is larger than the sum of its proper divisors (10329110).

18097642 is a wasteful number, since it uses less digits than its factorization.

18097642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 18097642 is about 4254.1323439686. The cubic root of 18097642 is about 262.5471637100.

The spelling of 18097642 in words is "eighteen million, ninety-seven thousand, six hundred forty-two".