3198901785 has 16 divisors (see below), whose sum is σ = 5256574656. Its totient is φ = 1659970368.

The previous prime is 3198901777. The next prime is 3198901789. The reversal of 3198901785 is 5871098913.

It is not a de Polignac number, because 3198901785 - 2³ = 3198901777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3198901789) by changing a digit.

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, 2881339 + ... + 2882448.

It is an arithmetic number, because the mean of its divisors is an integer number (328535916).

Almost surely, 2^3198901785 is an apocalyptic number.

It is an amenable number.

3198901785 is a deficient number, since it is larger than the sum of its proper divisors (2057672871).

3198901785 is a wasteful number, since it uses less digits than its factorization.

3198901785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763832.

The product of its (nonzero) digits is 544320, while the sum is 51.

The square root of 3198901785 is about 56558.8347210230. The cubic root of 3198901785 is about 1473.4440027238. Note that the first 3 decimals are identical.

The spelling of 3198901785 in words is "three billion, one hundred ninety-eight million, nine hundred one thousand, seven hundred eighty-five".