18040141 has 16 divisors (see below), whose sum is σ = 21086208. Its totient is φ = 15116400.

The previous prime is 18040129. The next prime is 18040147. The reversal of 18040141 is 14104081.

It is a cyclic number.

It is not a de Polignac number, because 18040141 - 2⁷ = 18040013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 94356 + ... + 94546.

It is an arithmetic number, because the mean of its divisors is an integer number (1317888).

Almost surely, 2^18040141 is an apocalyptic number.

It is an amenable number.

18040141 is a deficient number, since it is larger than the sum of its proper divisors (3046067).

18040141 is a wasteful number, since it uses less digits than its factorization.

18040141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 18040141 is about 4247.3687148634. The cubic root of 18040141 is about 262.2688080821.

It can be divided in two parts, 18040 and 141, that multiplied together give a triangular number (2543640 = T₂₂₅₅).

The spelling of 18040141 in words is "eighteen million, forty thousand, one hundred forty-one".