18139083 has 8 divisors (see below), whose sum is σ = 24360000. Its totient is φ = 12005448.

The previous prime is 18139073. The next prime is 18139087. The reversal of 18139083 is 38093181.

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

It is a de Polignac number, because none of the positive numbers 2^k-18139083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18139087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21333 + ... + 22166.

It is an arithmetic number, because the mean of its divisors is an integer number (3045000).

Almost surely, 2^18139083 is an apocalyptic number.

18139083 is a deficient number, since it is larger than the sum of its proper divisors (6220917).

18139083 is a wasteful number, since it uses less digits than its factorization.

18139083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43641.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 18139083 is about 4259.0002347969. Note that the first 3 decimals coincide. The cubic root of 18139083 is about 262.7474093709.

The spelling of 18139083 in words is "eighteen million, one hundred thirty-nine thousand, eighty-three".