3261978459 has 40 divisors (see below), whose sum is σ = 4994508288. Its totient is φ = 2120690160.

The previous prime is 3261978413. The next prime is 3261978509. The reversal of 3261978459 is 9548791623.

3261978459 is a `hidden beast` number, since 326 + 197 + 84 + 59 = 666.

It is not a de Polignac number, because 3261978459 - 2⁹ = 3261977947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3261978259) 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 39 ways as a sum of consecutive naturals, for example, 1167354 + ... + 1170144.

Almost surely, 2^3261978459 is an apocalyptic number.

3261978459 is a deficient number, since it is larger than the sum of its proper divisors (1732529829).

3261978459 is a wasteful number, since it uses less digits than its factorization.

3261978459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3148 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 3261978459 is about 57113.7326656208. The cubic root of 3261978459 is about 1483.0656049677.

The spelling of 3261978459 in words is "three billion, two hundred sixty-one million, nine hundred seventy-eight thousand, four hundred fifty-nine".