1779657385444 has 9 divisors (see below), whose sum is σ = 3114405093667. Its totient is φ = 889827358684.

The previous prime is 1779657385427. The next prime is 1779657385481. The reversal of 1779657385444 is 4445837569771.

The square root of 1779657385444 is 1334038.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2334567 + ... + 3001585.

Almost surely, 2^{1779657385444} is an apocalyptic number.

1779657385444 is the 1334038-th square number.

It is an amenable number.

1779657385444 is a deficient number, since it is larger than the sum of its proper divisors (1334747708223).

1779657385444 is an frugal number, since it uses more digits than its factorization.

1779657385444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334042 (or 667021 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 70.

The spelling of 1779657385444 in words is "one trillion, seven hundred seventy-nine billion, six hundred fifty-seven million, three hundred eighty-five thousand, four hundred forty-four".