1946136779 has 2 divisors, whose sum is σ = 1946136780. Its totient is φ = 1946136778.

The previous prime is 1946136763. The next prime is 1946136811. The reversal of 1946136779 is 9776316491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1946136779 - 2⁴ = 1946136763 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1946136779.

It is not a weakly prime, because it can be changed into another prime (1946136719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973068389 + 973068390.

It is an arithmetic number, because the mean of its divisors is an integer number (973068390).

Almost surely, 2^1946136779 is an apocalyptic number.

1946136779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946136779 is an equidigital number, since it uses as much as digits as its factorization.

1946136779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 53.

The square root of 1946136779 is about 44115.0402810651. The cubic root of 1946136779 is about 1248.5073979407.

The spelling of 1946136779 in words is "one billion, nine hundred forty-six million, one hundred thirty-six thousand, seven hundred seventy-nine".