2113201837 has 2 divisors, whose sum is σ = 2113201838. Its totient is φ = 2113201836.

The previous prime is 2113201807. The next prime is 2113201873. The reversal of 2113201837 is 7381023112.

Together with next prime (2113201873) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1629817641 + 483384196 = 40371^2 + 21986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113201837 - 2⁷ = 2113201709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113201807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056600918 + 1056600919.

It is an arithmetic number, because the mean of its divisors is an integer number (1056600919).

Almost surely, 2^2113201837 is an apocalyptic number.

It is an amenable number.

2113201837 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113201837 is an equidigital number, since it uses as much as digits as its factorization.

2113201837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2113201837 is about 45969.5751231181. The cubic root of 2113201837 is about 1283.2570528600.

Adding to 2113201837 its reverse (7381023112), we get a palindrome (9494224949).

The spelling of 2113201837 in words is "two billion, one hundred thirteen million, two hundred one thousand, eight hundred thirty-seven".