2091448277 has 2 divisors, whose sum is σ = 2091448278. Its totient is φ = 2091448276.

The previous prime is 2091448231. The next prime is 2091448279. The reversal of 2091448277 is 7728441902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1539856081 + 551592196 = 39241^2 + 23486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091448277 - 2¹² = 2091444181 is a prime.

Together with 2091448279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091448279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045724138 + 1045724139.

It is an arithmetic number, because the mean of its divisors is an integer number (1045724139).

Almost surely, 2^2091448277 is an apocalyptic number.

It is an amenable number.

2091448277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091448277 is an equidigital number, since it uses as much as digits as its factorization.

2091448277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 2091448277 is about 45732.3548158194. The cubic root of 2091448277 is about 1278.8385209713.

The spelling of 2091448277 in words is "two billion, ninety-one million, four hundred forty-eight thousand, two hundred seventy-seven".