2113606637 has 2 divisors, whose sum is σ = 2113606638. Its totient is φ = 2113606636.

The previous prime is 2113606633. The next prime is 2113606657. The reversal of 2113606637 is 7366063112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1597680841 + 515925796 = 39971^2 + 22714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113606637 - 2² = 2113606633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2113606597 and 2113606606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113606633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056803318 + 1056803319.

It is an arithmetic number, because the mean of its divisors is an integer number (1056803319).

Almost surely, 2^2113606637 is an apocalyptic number.

It is an amenable number.

2113606637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113606637 is an equidigital number, since it uses as much as digits as its factorization.

2113606637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 2113606637 is about 45973.9778244172. The cubic root of 2113606637 is about 1283.3389868681.

Adding to 2113606637 its reverse (7366063112), we get a palindrome (9479669749).

The spelling of 2113606637 in words is "two billion, one hundred thirteen million, six hundred six thousand, six hundred thirty-seven".