3261986745 has 16 divisors (see below), whose sum is σ = 5260277760. Its totient is φ = 1726026624.

The previous prime is 3261986683. The next prime is 3261986789. The reversal of 3261986745 is 5476891623.

It is not a de Polignac number, because 3261986745 - 2¹¹ = 3261984697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854260 + ... + 858069.

It is an arithmetic number, because the mean of its divisors is an integer number (328767360).

Almost surely, 2^3261986745 is an apocalyptic number.

It is an amenable number.

3261986745 is a deficient number, since it is larger than the sum of its proper divisors (1998291015).

3261986745 is a wasteful number, since it uses less digits than its factorization.

3261986745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712464.

The product of its digits is 2177280, while the sum is 51.

The square root of 3261986745 is about 57113.8052050465. The cubic root of 3261986745 is about 1483.0668607159.

The spelling of 3261986745 in words is "three billion, two hundred sixty-one million, nine hundred eighty-six thousand, seven hundred forty-five".