1872169916 has 12 divisors (see below), whose sum is σ = 3418745232. Its totient is φ = 895385568.

The previous prime is 1872169891. The next prime is 1872169969. The reversal of 1872169916 is 6199612781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10174745 + ... + 10174928.

It is an arithmetic number, because the mean of its divisors is an integer number (284895436).

Almost surely, 2^1872169916 is an apocalyptic number.

It is an amenable number.

1872169916 is a deficient number, since it is larger than the sum of its proper divisors (1546575316).

1872169916 is a wasteful number, since it uses less digits than its factorization.

1872169916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20349700 (or 20349698 counting only the distinct ones).

The product of its digits is 326592, while the sum is 50.

The square root of 1872169916 is about 43268.5788534821. The cubic root of 1872169916 is about 1232.4853169971.

The spelling of 1872169916 in words is "one billion, eight hundred seventy-two million, one hundred sixty-nine thousand, nine hundred sixteen".