1896321872 has 20 divisors (see below), whose sum is σ = 3687115200. Its totient is φ = 944808288.

The previous prime is 1896321853. The next prime is 1896321893. The reversal of 1896321872 is 2781236981.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 204872 + ... + 213927.

It is an arithmetic number, because the mean of its divisors is an integer number (184355760).

Almost surely, 2^1896321872 is an apocalyptic number.

It is an amenable number.

1896321872 is a deficient number, since it is larger than the sum of its proper divisors (1790793328).

1896321872 is a wasteful number, since it uses less digits than its factorization.

1896321872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419090 (or 419084 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 1896321872 is about 43546.7779749547. Note that the first 3 decimals coincide. The cubic root of 1896321872 is about 1237.7625868921.

The spelling of 1896321872 in words is "one billion, eight hundred ninety-six million, three hundred twenty-one thousand, eight hundred seventy-two".