18441137 has 8 divisors (see below), whose sum is σ = 21665280. Its totient is φ = 15474960.

The previous prime is 18441119. The next prime is 18441139. The reversal of 18441137 is 73114481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18441137 - 2¹⁶ = 18375601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18441139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64337 + ... + 64622.

It is an arithmetic number, because the mean of its divisors is an integer number (2708160).

Almost surely, 2^18441137 is an apocalyptic number.

It is an amenable number.

18441137 is a deficient number, since it is larger than the sum of its proper divisors (3224143).

18441137 is a wasteful number, since it uses less digits than its factorization.

18441137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128983.

The product of its digits is 2688, while the sum is 29.

The square root of 18441137 is about 4294.3144970996. The cubic root of 18441137 is about 264.1978210074.

The spelling of 18441137 in words is "eighteen million, four hundred forty-one thousand, one hundred thirty-seven".