1944457379 has 2 divisors, whose sum is σ = 1944457380. Its totient is φ = 1944457378.

The previous prime is 1944457369. The next prime is 1944457391. The reversal of 1944457379 is 9737544491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1944457379 - 2¹⁶ = 1944391843 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 1944457379.

It is not a weakly prime, because it can be changed into another prime (1944457369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972228689 + 972228690.

It is an arithmetic number, because the mean of its divisors is an integer number (972228690).

Almost surely, 2^1944457379 is an apocalyptic number.

1944457379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944457379 is an equidigital number, since it uses as much as digits as its factorization.

1944457379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The square root of 1944457379 is about 44096.0018482402. The cubic root of 1944457379 is about 1248.1481654418.

The spelling of 1944457379 in words is "one billion, nine hundred forty-four million, four hundred fifty-seven thousand, three hundred seventy-nine".