18453842 has 16 divisors (see below), whose sum is σ = 30694464. Its totient is φ = 8250000.

The previous prime is 18453793. The next prime is 18453863. The reversal of 18453842 is 24835481.

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, 5534 + ... + 8217.

It is an arithmetic number, because the mean of its divisors is an integer number (1918404).

Almost surely, 2^18453842 is an apocalyptic number.

18453842 is a deficient number, since it is larger than the sum of its proper divisors (12240622).

18453842 is a wasteful number, since it uses less digits than its factorization.

18453842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13825.

The product of its digits is 30720, while the sum is 35.

The square root of 18453842 is about 4295.7935239022. The cubic root of 18453842 is about 264.2584800070.

The spelling of 18453842 in words is "eighteen million, four hundred fifty-three thousand, eight hundred forty-two".