18089061 has 4 divisors (see below), whose sum is σ = 24118752. Its totient is φ = 12059372.

The previous prime is 18089039. The next prime is 18089081. The reversal of 18089061 is 16098081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16098081 = 3 ⋅5366027.

It is a cyclic number.

It is not a de Polignac number, because 18089061 - 2⁶ = 18088997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18089021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014841 + ... + 3014846.

It is an arithmetic number, because the mean of its divisors is an integer number (6029688).

Almost surely, 2^18089061 is an apocalyptic number.

It is an amenable number.

18089061 is a deficient number, since it is larger than the sum of its proper divisors (6029691).

18089061 is an equidigital number, since it uses as much as digits as its factorization.

18089061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029690.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 18089061 is about 4253.1236756060. The cubic root of 18089061 is about 262.5056615559.

The spelling of 18089061 in words is "eighteen million, eighty-nine thousand, sixty-one".