2113666937 has 2 divisors, whose sum is σ = 2113666938. Its totient is φ = 2113666936.

The previous prime is 2113666931. The next prime is 2113666981. The reversal of 2113666937 is 7396663112.

It is a happy number.

It is an a-pointer prime, because the next prime (2113666981) can be obtained adding 2113666937 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2049282361 + 64384576 = 45269^2 + 8024^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113666937 - 2²² = 2109472633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2113666931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056833468 + 1056833469.

It is an arithmetic number, because the mean of its divisors is an integer number (1056833469).

Almost surely, 2^2113666937 is an apocalyptic number.

It is an amenable number.

2113666937 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113666937 is an equidigital number, since it uses as much as digits as its factorization.

2113666937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 2113666937 is about 45974.6336255114. The cubic root of 2113666937 is about 1283.3511910635.

The spelling of 2113666937 in words is "two billion, one hundred thirteen million, six hundred sixty-six thousand, nine hundred thirty-seven".