2111772829 has 2 divisors, whose sum is σ = 2111772830. Its totient is φ = 2111772828.

The previous prime is 2111772821. The next prime is 2111772851. The reversal of 2111772829 is 9282771112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1866067204 + 245705625 = 43198^2 + 15675^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111772829 - 2³ = 2111772821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111772791 and 2111772800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111772821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055886414 + 1055886415.

It is an arithmetic number, because the mean of its divisors is an integer number (1055886415).

Almost surely, 2^2111772829 is an apocalyptic number.

It is an amenable number.

2111772829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111772829 is an equidigital number, since it uses as much as digits as its factorization.

2111772829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 40.

The square root of 2111772829 is about 45954.0295186396. The cubic root of 2111772829 is about 1282.9677291632.

The spelling of 2111772829 in words is "two billion, one hundred eleven million, seven hundred seventy-two thousand, eight hundred twenty-nine".