18279141 has 16 divisors (see below), whose sum is σ = 24910848. Its totient is φ = 11919600.

The previous prime is 18279139. The next prime is 18279143. The reversal of 18279141 is 14197281.

It is an interprime number because it is at equal distance from previous prime (18279139) and next prime (18279143).

It is not a de Polignac number, because 18279141 - 2¹ = 18279139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18279143) 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, 42196 + ... + 42626.

It is an arithmetic number, because the mean of its divisors is an integer number (1556928).

Almost surely, 2^18279141 is an apocalyptic number.

It is an amenable number.

18279141 is a deficient number, since it is larger than the sum of its proper divisors (6631707).

18279141 is a wasteful number, since it uses less digits than its factorization.

18279141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its digits is 4032, while the sum is 33.

The square root of 18279141 is about 4275.4112082933. The cubic root of 18279141 is about 263.4219301667.

The spelling of 18279141 in words is "eighteen million, two hundred seventy-nine thousand, one hundred forty-one".