18379289 has 8 divisors (see below), whose sum is σ = 19386240. Its totient is φ = 17376336.

The previous prime is 18379279. The next prime is 18379297. The reversal of 18379289 is 98297381.

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

It is not a de Polignac number, because 18379289 - 2¹⁶ = 18313753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18379219) 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, 16112 + ... + 17214.

It is an arithmetic number, because the mean of its divisors is an integer number (2423280).

Almost surely, 2^18379289 is an apocalyptic number.

18379289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18379289 is a deficient number, since it is larger than the sum of its proper divisors (1006951).

18379289 is a wasteful number, since it uses less digits than its factorization.

18379289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999.

The product of its digits is 217728, while the sum is 47.

The square root of 18379289 is about 4287.1072998002. The cubic root of 18379289 is about 263.9021341032.

The spelling of 18379289 in words is "eighteen million, three hundred seventy-nine thousand, two hundred eighty-nine".