1665772112 has 40 divisors (see below), whose sum is σ = 3255300576. Its totient is φ = 825727616.

The previous prime is 1665772111. The next prime is 1665772127. The reversal of 1665772112 is 2112775661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665772111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092983 + ... + 1094505.

Almost surely, 2^1665772112 is an apocalyptic number.

It is an amenable number.

1665772112 is a deficient number, since it is larger than the sum of its proper divisors (1589528464).

1665772112 is a wasteful number, since it uses less digits than its factorization.

1665772112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2069 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 1665772112 is about 40813.8715634770. The cubic root of 1665772112 is about 1185.4189411674.

The spelling of 1665772112 in words is "one billion, six hundred sixty-five million, seven hundred seventy-two thousand, one hundred twelve".