18059019 has 32 divisors (see below), whose sum is σ = 27525120. Its totient is φ = 10432800.

The previous prime is 18058991. The next prime is 18059021. The reversal of 18059019 is 91095081.

It is not a de Polignac number, because 18059019 - 2⁹ = 18058507 is a prime.

It is a super-2 number, since 2×18059019² = 652256334484722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (18059039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129852 + ... + 129990.

It is an arithmetic number, because the mean of its divisors is an integer number (860160).

Almost surely, 2^18059019 is an apocalyptic number.

18059019 is a deficient number, since it is larger than the sum of its proper divisors (9466101).

18059019 is a wasteful number, since it uses less digits than its factorization.

18059019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 18059019 is about 4249.5904508552. The cubic root of 18059019 is about 262.3602594098.

The spelling of 18059019 in words is "eighteen million, fifty-nine thousand, nineteen".