2018200191 has 24 divisors (see below), whose sum is σ = 3134495664. Its totient is φ = 1151700480.

The previous prime is 2018200147. The next prime is 2018200199. The reversal of 2018200191 is 1910028102.

It is not a de Polignac number, because 2018200191 - 2⁶ = 2018200127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018200199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104751 + ... + 122511.

It is an arithmetic number, because the mean of its divisors is an integer number (130603986).

Almost surely, 2^2018200191 is an apocalyptic number.

2018200191 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2018200191 is a deficient number, since it is larger than the sum of its proper divisors (1116295473).

2018200191 is a wasteful number, since it uses less digits than its factorization.

2018200191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18551 (or 18544 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 2018200191 is about 44924.3830341609. The cubic root of 2018200191 is about 1263.7313158595.

Adding to 2018200191 its reverse (1910028102), we get a palindrome (3928228293).

The spelling of 2018200191 in words is "two billion, eighteen million, two hundred thousand, one hundred ninety-one".