3191868 has 18 divisors (see below), whose sum is σ = 8068424. Its totient is φ = 1063944.

The previous prime is 3191861. The next prime is 3191893. The reversal of 3191868 is 8681913.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 88663 = 3191868 / (3 + 1 + 9 + 1 + 8 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3191861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44296 + ... + 44367.

Almost surely, 2^3191868 is an apocalyptic number.

It is an amenable number.

3191868 is an abundant number, since it is smaller than the sum of its proper divisors (4876556).

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

3191868 is a wasteful number, since it uses less digits than its factorization.

3191868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88673 (or 88668 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 3191868 is about 1786.5799730211. The cubic root of 3191868 is about 147.2363267897.

It can be divided in two parts, 319 and 1868, that added together give a 7-th power (2187 = 3⁷).

The spelling of 3191868 in words is "three million, one hundred ninety-one thousand, eight hundred sixty-eight".