18441135 has 16 divisors (see below), whose sum is σ = 32784480. Its totient is φ = 9835200.

The previous prime is 18441119. The next prime is 18441139. The reversal of 18441135 is 53114481.

It is a happy number.

It is not a de Polignac number, because 18441135 - 2⁴ = 18441119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18441099 and 18441108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18441139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68166 + ... + 68435.

It is an arithmetic number, because the mean of its divisors is an integer number (2049030).

Almost surely, 2^18441135 is an apocalyptic number.

18441135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18441135 is a deficient number, since it is larger than the sum of its proper divisors (14343345).

18441135 is a wasteful number, since it uses less digits than its factorization.

18441135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136615 (or 136609 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 18441135 is about 4294.3142642336. The cubic root of 18441135 is about 264.1978114564.

The spelling of 18441135 in words is "eighteen million, four hundred forty-one thousand, one hundred thirty-five".