1966764829 has 2 divisors, whose sum is σ = 1966764830. Its totient is φ = 1966764828.

The previous prime is 1966764797. The next prime is 1966764853. The reversal of 1966764829 is 9284676691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1907505625 + 59259204 = 43675^2 + 7698^2 .

It is an emirp because it is prime and its reverse (9284676691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1966764829 - 2⁵ = 1966764797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966764869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983382414 + 983382415.

It is an arithmetic number, because the mean of its divisors is an integer number (983382415).

Almost surely, 2^1966764829 is an apocalyptic number.

It is an amenable number.

1966764829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966764829 is an equidigital number, since it uses as much as digits as its factorization.

1966764829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 58.

The square root of 1966764829 is about 44348.2223882762. Note that the first 3 decimals coincide. The cubic root of 1966764829 is about 1252.9030826559.

The spelling of 1966764829 in words is "one billion, nine hundred sixty-six million, seven hundred sixty-four thousand, eight hundred twenty-nine".