1966573444 has 12 divisors (see below), whose sum is σ = 3754367568. Its totient is φ = 893897000.

The previous prime is 1966573387. The next prime is 1966573451. The reversal of 1966573444 is 4443756691.

It is a super-2 number, since 2×1966573444² = 7734822221292042272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22347382 + ... + 22347469.

It is an arithmetic number, because the mean of its divisors is an integer number (312863964).

Almost surely, 2^1966573444 is an apocalyptic number.

It is an amenable number.

1966573444 is a deficient number, since it is larger than the sum of its proper divisors (1787794124).

1966573444 is a wasteful number, since it uses less digits than its factorization.

1966573444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44694866 (or 44694864 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

The square root of 1966573444 is about 44346.0645830044. The cubic root of 1966573444 is about 1252.8624415260.

The spelling of 1966573444 in words is "one billion, nine hundred sixty-six million, five hundred seventy-three thousand, four hundred forty-four".