18138053 has 8 divisors (see below), whose sum is σ = 19051008. Its totient is φ = 17235504.

The previous prime is 18138049. The next prime is 18138061. The reversal of 18138053 is 35083181.

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 18138053 - 2² = 18138049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18138083) 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, 1100 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (2381376).

Almost surely, 2^18138053 is an apocalyptic number.

It is an amenable number.

18138053 is a deficient number, since it is larger than the sum of its proper divisors (912955).

18138053 is a wasteful number, since it uses less digits than its factorization.

18138053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5203.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 18138053 is about 4258.8793126831. The cubic root of 18138053 is about 262.7424360405.

The spelling of 18138053 in words is "eighteen million, one hundred thirty-eight thousand, fifty-three".