18885043 has 2 divisors, whose sum is σ = 18885044. Its totient is φ = 18885042.

The previous prime is 18885019. The next prime is 18885049. The reversal of 18885043 is 34058881.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18885043 is a prime.

It is a super-2 number, since 2×18885043² = 713289698223698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18884993 and 18885011.

It is not a weakly prime, because it can be changed into another prime (18885049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9442521 + 9442522.

It is an arithmetic number, because the mean of its divisors is an integer number (9442522).

Almost surely, 2^18885043 is an apocalyptic number.

18885043 is a deficient number, since it is larger than the sum of its proper divisors (1).

18885043 is an equidigital number, since it uses as much as digits as its factorization.

18885043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 18885043 is about 4345.6924649588. The cubic root of 18885043 is about 266.3009154172.

The spelling of 18885043 in words is "eighteen million, eight hundred eighty-five thousand, forty-three".