1872336113 has 2 divisors, whose sum is σ = 1872336114. Its totient is φ = 1872336112.

The previous prime is 1872336083. The next prime is 1872336131. The reversal of 1872336113 is 3116332781.

Together with next prime (1872336131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1605765184 + 266570929 = 40072^2 + 16327^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872336113 - 2¹⁰ = 1872335089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1872836113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936168056 + 936168057.

It is an arithmetic number, because the mean of its divisors is an integer number (936168057).

Almost surely, 2^1872336113 is an apocalyptic number.

It is an amenable number.

1872336113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872336113 is an equidigital number, since it uses as much as digits as its factorization.

1872336113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 1872336113 is about 43270.4993384638. The cubic root of 1872336113 is about 1232.5217861408.

Adding to 1872336113 its reverse (3116332781), we get a palindrome (4988668894).

The spelling of 1872336113 in words is "one billion, eight hundred seventy-two million, three hundred thirty-six thousand, one hundred thirteen".