18469842 has 16 divisors (see below), whose sum is σ = 36996960. Its totient is φ = 6147072.

The previous prime is 18469813. The next prime is 18469853. The reversal of 18469842 is 24896481.

It is a super-2 number, since 2×18469842² = 682270127009928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18469794 and 18469803.

It is an unprimeable number.

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, 2613 + ... + 6615.

It is an arithmetic number, because the mean of its divisors is an integer number (2312310).

Almost surely, 2^18469842 is an apocalyptic number.

18469842 is an abundant number, since it is smaller than the sum of its proper divisors (18527118).

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

18469842 is a wasteful number, since it uses less digits than its factorization.

18469842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4777.

The product of its digits is 110592, while the sum is 42.

The square root of 18469842 is about 4297.6554073122. The cubic root of 18469842 is about 264.3348311230.

The spelling of 18469842 in words is "eighteen million, four hundred sixty-nine thousand, eight hundred forty-two".