2136938761 has 2 divisors, whose sum is σ = 2136938762. Its totient is φ = 2136938760.

The previous prime is 2136938693. The next prime is 2136938807. The reversal of 2136938761 is 1678396312.

It is an a-pointer prime, because the next prime (2136938807) can be obtained adding 2136938761 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1604483136 + 532455625 = 40056^2 + 23075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136938761 - 2⁹ = 2136938249 is a prime.

It is not a weakly prime, because it can be changed into another prime (2136932761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068469380 + 1068469381.

It is an arithmetic number, because the mean of its divisors is an integer number (1068469381).

Almost surely, 2^2136938761 is an apocalyptic number.

It is an amenable number.

2136938761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136938761 is an equidigital number, since it uses as much as digits as its factorization.

2136938761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 2136938761 is about 46227.0349579118. The cubic root of 2136938761 is about 1288.0439800913.

The spelling of 2136938761 in words is "two billion, one hundred thirty-six million, nine hundred thirty-eight thousand, seven hundred sixty-one".