3261365380 has 144 divisors (see below), whose sum is σ = 8522236800. Its totient is φ = 1026514944.

The previous prime is 3261365353. The next prime is 3261365399. The reversal of 3261365380 is 835631623.

It is a happy number.

It is a super-3 number, since 3×3261365380³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7263396 + ... + 7263844.

It is an arithmetic number, because the mean of its divisors is an integer number (59182200).

Almost surely, 2^3261365380 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 3261365380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4261118400).

3261365380 is an abundant number, since it is smaller than the sum of its proper divisors (5260871420).

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

3261365380 is a wasteful number, since it uses less digits than its factorization.

3261365380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 3261365380 is about 57108.3652366271. The cubic root of 3261365380 is about 1482.9726865790.

The spelling of 3261365380 in words is "three billion, two hundred sixty-one million, three hundred sixty-five thousand, three hundred eighty".