2116911739 has 2 divisors, whose sum is σ = 2116911740. Its totient is φ = 2116911738.

The previous prime is 2116911721. The next prime is 2116911751. The reversal of 2116911739 is 9371196112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2116911739 - 2⁵ = 2116911707 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116911779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058455869 + 1058455870.

It is an arithmetic number, because the mean of its divisors is an integer number (1058455870).

Almost surely, 2^2116911739 is an apocalyptic number.

2116911739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116911739 is an equidigital number, since it uses as much as digits as its factorization.

2116911739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 40.

The square root of 2116911739 is about 46009.9091392278. The cubic root of 2116911739 is about 1284.0075687468.

The spelling of 2116911739 in words is "two billion, one hundred sixteen million, nine hundred eleven thousand, seven hundred thirty-nine".