18908343 has 16 divisors (see below), whose sum is σ = 28153600. Its totient is φ = 12542040.

The previous prime is 18908303. The next prime is 18908359. The reversal of 18908343 is 34380981.

It is not a de Polignac number, because 18908343 - 2¹⁰ = 18907319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18908298 and 18908307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18908303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4038 + ... + 7356.

It is an arithmetic number, because the mean of its divisors is an integer number (1759600).

Almost surely, 2^18908343 is an apocalyptic number.

18908343 is a deficient number, since it is larger than the sum of its proper divisors (9245257).

18908343 is a wasteful number, since it uses less digits than its factorization.

18908343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 18908343 is about 4348.3724541488. The cubic root of 18908343 is about 266.4103893765.

The spelling of 18908343 in words is "eighteen million, nine hundred eight thousand, three hundred forty-three".