3491368391 has 4 divisors (see below), whose sum is σ = 3990135312. Its totient is φ = 2992601472.

The previous prime is 3491368343. The next prime is 3491368393. The reversal of 3491368391 is 1938631943.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-3491368391 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 (3491368393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249383450 + ... + 249383463.

It is an arithmetic number, because the mean of its divisors is an integer number (997533828).

Almost surely, 2^3491368391 is an apocalyptic number.

3491368391 is a deficient number, since it is larger than the sum of its proper divisors (498766921).

3491368391 is an equidigital number, since it uses as much as digits as its factorization.

3491368391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498766920.

The product of its digits is 419904, while the sum is 47.

The square root of 3491368391 is about 59087.8023876333. The cubic root of 3491368391 is about 1517.0453323692.

The spelling of 3491368391 in words is "three billion, four hundred ninety-one million, three hundred sixty-eight thousand, three hundred ninety-one".