18306141 has 16 divisors (see below), whose sum is σ = 27955200. Its totient is φ = 10438128.

The previous prime is 18306121. The next prime is 18306173. The reversal of 18306141 is 14160381.

It is not a de Polignac number, because 18306141 - 2⁹ = 18305629 is a prime.

It is a super-2 number, since 2×18306141² = 670229596623762, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18306121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17100 + ... + 18138.

It is an arithmetic number, because the mean of its divisors is an integer number (1747200).

Almost surely, 2^18306141 is an apocalyptic number.

It is an amenable number.

18306141 is a deficient number, since it is larger than the sum of its proper divisors (9649059).

18306141 is a wasteful number, since it uses less digits than its factorization.

18306141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18306141 is about 4278.5676341505. The cubic root of 18306141 is about 263.5515659648.

Subtracting from 18306141 its reverse (14160381), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 18306141 in words is "eighteen million, three hundred six thousand, one hundred forty-one".