3261863388 has 24 divisors (see below), whose sum is σ = 8698302592. Its totient is φ = 931960944.

The previous prime is 3261863383. The next prime is 3261863411. The reversal of 3261863388 is 8833681623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261863383) 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, 19415770 + ... + 19415937.

Almost surely, 2^3261863388 is an apocalyptic number.

It is an amenable number.

3261863388 is an abundant number, since it is smaller than the sum of its proper divisors (5436439204).

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

3261863388 is a wasteful number, since it uses less digits than its factorization.

3261863388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38831721 (or 38831719 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 3261863388 is about 57112.7252720442. The cubic root of 3261863388 is about 1483.0481656691.

The spelling of 3261863388 in words is "three billion, two hundred sixty-one million, eight hundred sixty-three thousand, three hundred eighty-eight".