3199621985 has 16 divisors (see below), whose sum is σ = 4420089216. Its totient is φ = 2178008448.

The previous prime is 3199621949. The next prime is 3199621993. The reversal of 3199621985 is 5891269913.

It is a happy number.

It is not a de Polignac number, because 3199621985 - 2⁸ = 3199621729 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 328847 + ... + 338436.

It is an arithmetic number, because the mean of its divisors is an integer number (276255576).

Almost surely, 2^3199621985 is an apocalyptic number.

3199621985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3199621985 is a deficient number, since it is larger than the sum of its proper divisors (1220467231).

3199621985 is a wasteful number, since it uses less digits than its factorization.

3199621985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667432.

The product of its digits is 1049760, while the sum is 53.

The square root of 3199621985 is about 56565.2011841203. The cubic root of 3199621985 is about 1473.5545713725.

The spelling of 3199621985 in words is "three billion, one hundred ninety-nine million, six hundred twenty-one thousand, nine hundred eighty-five".