3291291261 has 6 divisors (see below), whose sum is σ = 4754087390. Its totient is φ = 2194194168.

The previous prime is 3291291203. The next prime is 3291291271. The reversal of 3291291261 is 1621921923.

It can be written as a sum of positive squares in only one way, i.e., 2964802500 + 326488761 = 54450^2 + 18069^2 .

It is not a de Polignac number, because 3291291261 - 2⁶ = 3291291197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291291271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 182849506 + ... + 182849523.

Almost surely, 2^3291291261 is an apocalyptic number.

It is an amenable number.

3291291261 is a deficient number, since it is larger than the sum of its proper divisors (1462796129).

3291291261 is a wasteful number, since it uses less digits than its factorization.

3291291261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365699035 (or 365699032 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 3291291261 is about 57369.7765465406. The cubic root of 3291291261 is about 1487.4947407106.

The spelling of 3291291261 in words is "three billion, two hundred ninety-one million, two hundred ninety-one thousand, two hundred sixty-one".