18202043 has 2 divisors, whose sum is σ = 18202044. Its totient is φ = 18202042.

The previous prime is 18202033. The next prime is 18202049. The reversal of 18202043 is 34020281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18202043 - 2⁶ = 18201979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18202049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9101021 + 9101022.

It is an arithmetic number, because the mean of its divisors is an integer number (9101022).

Almost surely, 2^18202043 is an apocalyptic number.

18202043 is a deficient number, since it is larger than the sum of its proper divisors (1).

18202043 is an equidigital number, since it uses as much as digits as its factorization.

18202043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 18202043 is about 4266.3852381143. The cubic root of 18202043 is about 263.0510534265.

The spelling of 18202043 in words is "eighteen million, two hundred two thousand, forty-three".