2000018191 has 2 divisors, whose sum is σ = 2000018192. Its totient is φ = 2000018190.

The previous prime is 2000018179. The next prime is 2000018197. The reversal of 2000018191 is 1918100002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2000018191 - 2¹¹ = 2000016143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000018197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000009095 + 1000009096.

It is an arithmetic number, because the mean of its divisors is an integer number (1000009096).

Almost surely, 2^2000018191 is an apocalyptic number.

2000018191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000018191 is an equidigital number, since it uses as much as digits as its factorization.

2000018191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 2000018191 is about 44721.5629310962. The cubic root of 2000018191 is about 1259.9248697539.

Adding to 2000018191 its reverse (1918100002), we get a palindrome (3918118193).

The spelling of 2000018191 in words is "two billion, eighteen thousand, one hundred ninety-one".