3161369891 has 8 divisors (see below), whose sum is σ = 3358860480. Its totient is φ = 2966989608.

The previous prime is 3161369867. The next prime is 3161369909. The reversal of 3161369891 is 1989631613.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3161369891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3161369851) 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, 775481 + ... + 779546.

It is an arithmetic number, because the mean of its divisors is an integer number (419857560).

Almost surely, 2^3161369891 is an apocalyptic number.

3161369891 is a deficient number, since it is larger than the sum of its proper divisors (197490589).

3161369891 is a wasteful number, since it uses less digits than its factorization.

3161369891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555153.

The product of its digits is 209952, while the sum is 47.

The square root of 3161369891 is about 56226.0606036027. The cubic root of 3161369891 is about 1467.6588044728.

The spelling of 3161369891 in words is "three billion, one hundred sixty-one million, three hundred sixty-nine thousand, eight hundred ninety-one".