2091939107 has 2 divisors, whose sum is σ = 2091939108. Its totient is φ = 2091939106.

The previous prime is 2091939089. The next prime is 2091939127. The reversal of 2091939107 is 7019391902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2091939107 - 2¹² = 2091935011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2091939127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045969553 + 1045969554.

It is an arithmetic number, because the mean of its divisors is an integer number (1045969554).

Almost surely, 2^2091939107 is an apocalyptic number.

2091939107 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091939107 is an equidigital number, since it uses as much as digits as its factorization.

2091939107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 2091939107 is about 45737.7208330280. The cubic root of 2091939107 is about 1278.9385542387.

The spelling of 2091939107 in words is "two billion, ninety-one million, nine hundred thirty-nine thousand, one hundred seven".