18138483 has 24 divisors (see below), whose sum is σ = 30089280. Its totient is φ = 10413360.

The previous prime is 18138451. The next prime is 18138487. The reversal of 18138483 is 38483181.

It is not a de Polignac number, because 18138483 - 2⁵ = 18138451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18138487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2941 + ... + 6702.

It is an arithmetic number, because the mean of its divisors is an integer number (1253720).

Almost surely, 2^18138483 is an apocalyptic number.

18138483 is a deficient number, since it is larger than the sum of its proper divisors (11950797).

18138483 is a wasteful number, since it uses less digits than its factorization.

18138483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679 (or 9676 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 18138483 is about 4258.9297951481. The cubic root of 18138483 is about 262.7445123081.

It can be divided in two parts, 1813 and 8483, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 18138483 in words is "eighteen million, one hundred thirty-eight thousand, four hundred eighty-three".