3261955136 has 56 divisors (see below), whose sum is σ = 7102473984. Its totient is φ = 1474081280.

The previous prime is 3261955111. The next prime is 3261955139. The reversal of 3261955136 is 6315591623.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3261955093 and 3261955102.

It is not an unprimeable number, because it can be changed into a prime (3261955139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108401 + ... + 135183.

Almost surely, 2^3261955136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261955136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3551236992).

3261955136 is an abundant number, since it is smaller than the sum of its proper divisors (3840518848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3261955136 is a wasteful number, since it uses less digits than its factorization.

3261955136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26979 (or 26969 counting only the distinct ones).

The product of its digits is 145800, while the sum is 41.

The square root of 3261955136 is about 57113.5284849395. The cubic root of 3261955136 is about 1483.0620703417.

The spelling of 3261955136 in words is "three billion, two hundred sixty-one million, nine hundred fifty-five thousand, one hundred thirty-six".