18839043 has 18 divisors (see below), whose sum is σ = 28910804. Its totient is φ = 11818944.

The previous prime is 18839011. The next prime is 18839059. The reversal of 18839043 is 34093881.

It is not a de Polignac number, because 18839043 - 2⁵ = 18839011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18838989 and 18839007.

It is not an unprimeable number, because it can be changed into a prime (18839063) 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 17 ways as a sum of consecutive naturals, for example, 1021 + ... + 6222.

Almost surely, 2^18839043 is an apocalyptic number.

18839043 is a deficient number, since it is larger than the sum of its proper divisors (10071761).

18839043 is a wasteful number, since it uses less digits than its factorization.

18839043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7283 (or 7263 counting only the distinct ones).

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

The square root of 18839043 is about 4340.3966408613. The cubic root of 18839043 is about 266.0845219181.

The spelling of 18839043 in words is "eighteen million, eight hundred thirty-nine thousand, forty-three".