18842071 has 2 divisors, whose sum is σ = 18842072. Its totient is φ = 18842070.

The previous prime is 18842029. The next prime is 18842111. The reversal of 18842071 is 17024881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18842071 - 2¹¹ = 18840023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18840071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9421035 + 9421036.

It is an arithmetic number, because the mean of its divisors is an integer number (9421036).

Almost surely, 2^18842071 is an apocalyptic number.

18842071 is a deficient number, since it is larger than the sum of its proper divisors (1).

18842071 is an equidigital number, since it uses as much as digits as its factorization.

18842071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 18842071 is about 4340.7454428934. The cubic root of 18842071 is about 266.0987770791.

The spelling of 18842071 in words is "eighteen million, eight hundred forty-two thousand, seventy-one".