18605049 has 4 divisors (see below), whose sum is σ = 24806736. Its totient is φ = 12403364.

The previous prime is 18605003. The next prime is 18605051. The reversal of 18605049 is 94050681.

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.

It is a cyclic number.

It is not a de Polignac number, because 18605049 - 2⁸ = 18604793 is a prime.

It is a super-2 number, since 2×18605049² = 692295696584802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18605149) 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, 3100839 + ... + 3100844.

It is an arithmetic number, because the mean of its divisors is an integer number (6201684).

Almost surely, 2^18605049 is an apocalyptic number.

It is an amenable number.

18605049 is a deficient number, since it is larger than the sum of its proper divisors (6201687).

18605049 is an equidigital number, since it uses as much as digits as its factorization.

18605049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201686.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 18605049 is about 4313.3570452723. The cubic root of 18605049 is about 264.9782775596.

The spelling of 18605049 in words is "eighteen million, six hundred five thousand, forty-nine".