18148842 has 24 divisors (see below), whose sum is σ = 39969540. Its totient is φ = 5950080.

The previous prime is 18148811. The next prime is 18148849. The reversal of 18148842 is 24884181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18071001 + 77841 = 4251^2 + 279^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18148797 and 18148806.

It is not an unprimeable number, because it can be changed into a prime (18148849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7167 + ... + 9362.

Almost surely, 2^18148842 is an apocalyptic number.

18148842 is an abundant number, since it is smaller than the sum of its proper divisors (21820698).

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

18148842 is a wasteful number, since it uses less digits than its factorization.

18148842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16598 (or 16595 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 18148842 is about 4260.1457721538. The cubic root of 18148842 is about 262.7945211287.

The spelling of 18148842 in words is "eighteen million, one hundred forty-eight thousand, eight hundred forty-two".