18049057 has 8 divisors (see below), whose sum is σ = 19474560. Its totient is φ = 16628880.

The previous prime is 18049021. The next prime is 18049079. The reversal of 18049057 is 75094081.

It is a happy number.

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 18049057 - 2¹⁹ = 17524769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18049357) 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, 8382 + ... + 10312.

It is an arithmetic number, because the mean of its divisors is an integer number (2434320).

Almost surely, 2^18049057 is an apocalyptic number.

It is an amenable number.

18049057 is a deficient number, since it is larger than the sum of its proper divisors (1425503).

18049057 is a wasteful number, since it uses less digits than its factorization.

18049057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18049057 is about 4248.4181762157. The cubic root of 18049057 is about 262.3120081059.

The spelling of 18049057 in words is "eighteen million, forty-nine thousand, fifty-seven".