18011045 has 16 divisors (see below), whose sum is σ = 23908080. Its totient is φ = 12939264.

The previous prime is 18011039. The next prime is 18011101. The reversal of 18011045 is 54011081.

It can be written as a sum of positive squares in 8 ways, for example, as 24964 + 17986081 = 158^2 + 4241^2 .

It is not a de Polignac number, because 18011045 - 2⁶ = 18010981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (1494255).

Almost surely, 2^18011045 is an apocalyptic number.

It is an amenable number.

18011045 is a deficient number, since it is larger than the sum of its proper divisors (5897035).

18011045 is a wasteful number, since it uses less digits than its factorization.

18011045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 18011045 is about 4243.9421532344. The cubic root of 18011045 is about 262.1277323286.

It can be divided in two parts, 180 and 11045, that multiplied together give a square (1988100 = 1410²).

The spelling of 18011045 in words is "eighteen million, eleven thousand, forty-five".