3489644643 has 16 divisors (see below), whose sum is σ = 4753489920. Its totient is φ = 2276636544.

The previous prime is 3489644569. The next prime is 3489644651. The reversal of 3489644643 is 3464469843.

It is not a de Polignac number, because 3489644643 - 2⁹ = 3489644131 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3489644143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38371 + ... + 91932.

It is an arithmetic number, because the mean of its divisors is an integer number (297093120).

Almost surely, 2^3489644643 is an apocalyptic number.

3489644643 is a deficient number, since it is larger than the sum of its proper divisors (1263845277).

3489644643 is a wasteful number, since it uses less digits than its factorization.

3489644643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130498.

The product of its digits is 5971968, while the sum is 51.

The square root of 3489644643 is about 59073.2142599334. The cubic root of 3489644643 is about 1516.7956275696.

The spelling of 3489644643 in words is "three billion, four hundred eighty-nine million, six hundred forty-four thousand, six hundred forty-three".