18188053 has 8 divisors (see below), whose sum is σ = 20117048. Its totient is φ = 16334784.

The previous prime is 18188033. The next prime is 18188059. The reversal of 18188053 is 35088181.

It can be written as a sum of positive squares in 4 ways, for example, as 23409 + 18164644 = 153^2 + 4262^2 .

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 18188053 - 2¹⁷ = 18056981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18188059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18426 + ... + 19387.

It is an arithmetic number, because the mean of its divisors is an integer number (2514631).

Almost surely, 2^18188053 is an apocalyptic number.

18188053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18188053 is a deficient number, since it is larger than the sum of its proper divisors (1928995).

18188053 is a wasteful number, since it uses less digits than its factorization.

18188053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37863.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 18188053 is about 4264.7453616834. The cubic root of 18188053 is about 262.9836429080.

The spelling of 18188053 in words is "eighteen million, one hundred eighty-eight thousand, fifty-three".