18398348 has 6 divisors (see below), whose sum is σ = 32197116. Its totient is φ = 9199172.

The previous prime is 18398339. The next prime is 18398351. The reversal of 18398348 is 84389381.

It is a junction number, because it is equal to n+sod(n) for n = 18398299 and 18398308.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2299790 + ... + 2299797.

It is an arithmetic number, because the mean of its divisors is an integer number (5366186).

Almost surely, 2^18398348 is an apocalyptic number.

It is an amenable number.

18398348 is a deficient number, since it is larger than the sum of its proper divisors (13798768).

18398348 is a wasteful number, since it uses less digits than its factorization.

18398348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599591 (or 4599589 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 18398348 is about 4289.3295513402. The cubic root of 18398348 is about 263.9933232165.

The spelling of 18398348 in words is "eighteen million, three hundred ninety-eight thousand, three hundred forty-eight".