18461339 has 8 divisors (see below), whose sum is σ = 19915392. Its totient is φ = 17012160.

The previous prime is 18461329. The next prime is 18461347. The reversal of 18461339 is 93316481.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18461339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18461299 and 18461308.

It is not an unprimeable number, because it can be changed into a prime (18461309) 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, 12167 + ... + 13599.

It is an arithmetic number, because the mean of its divisors is an integer number (2489424).

Almost surely, 2^18461339 is an apocalyptic number.

18461339 is a deficient number, since it is larger than the sum of its proper divisors (1454053).

18461339 is a wasteful number, since it uses less digits than its factorization.

18461339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437.

The product of its digits is 15552, while the sum is 35.

The square root of 18461339 is about 4296.6660331005. Note that the first 3 decimals coincide. The cubic root of 18461339 is about 264.2942607692.

The spelling of 18461339 in words is "eighteen million, four hundred sixty-one thousand, three hundred thirty-nine".