3491081291 has 16 divisors (see below), whose sum is σ = 3793578624. Its totient is φ = 3199830144.

The previous prime is 3491081287. The next prime is 3491081309. The reversal of 3491081291 is 1921801943.

It is a cyclic number.

It is not a de Polignac number, because 3491081291 - 2² = 3491081287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3491081201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246776 + ... + 260538.

It is an arithmetic number, because the mean of its divisors is an integer number (237098664).

Almost surely, 2^3491081291 is an apocalyptic number.

3491081291 is a deficient number, since it is larger than the sum of its proper divisors (302497333).

3491081291 is a wasteful number, since it uses less digits than its factorization.

3491081291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14170.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 3491081291 is about 59085.3729022674. The cubic root of 3491081291 is about 1517.0037483248.

The spelling of 3491081291 in words is "three billion, four hundred ninety-one million, eighty-one thousand, two hundred ninety-one".