18541149 has 16 divisors (see below), whose sum is σ = 27480384. Its totient is φ = 11024000.

The previous prime is 18541147. The next prime is 18541157. The reversal of 18541149 is 94114581.

It is not a de Polignac number, because 18541149 - 2¹ = 18541147 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18541141) 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, 3552 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (1717524).

Almost surely, 2^18541149 is an apocalyptic number.

It is an amenable number.

18541149 is a deficient number, since it is larger than the sum of its proper divisors (8939235).

18541149 is a wasteful number, since it uses less digits than its factorization.

18541149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10668.

The product of its digits is 5760, while the sum is 33.

The square root of 18541149 is about 4305.9434506273. The cubic root of 18541149 is about 264.6745690745.

It can be divided in two parts, 1854 and 1149, that added together give a palindrome (3003).

The spelling of 18541149 in words is "eighteen million, five hundred forty-one thousand, one hundred forty-nine".