3861496191 has 32 divisors (see below), whose sum is σ = 6038771200. Its totient is φ = 2148902784.

The previous prime is 3861496187. The next prime is 3861496193. The reversal of 3861496191 is 1916941683.

It is a happy number.

It is not a de Polignac number, because 3861496191 - 2² = 3861496187 is a prime.

It is a super-2 number, since 2×3861496191² = 29822305666215016962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3861496191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861496193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309021 + ... + 321273.

It is an arithmetic number, because the mean of its divisors is an integer number (188711600).

Almost surely, 2^3861496191 is an apocalyptic number.

3861496191 is a deficient number, since it is larger than the sum of its proper divisors (2177275009).

3861496191 is a wasteful number, since it uses less digits than its factorization.

3861496191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12655.

The product of its digits is 279936, while the sum is 48.

The square root of 3861496191 is about 62140.9381245568. The cubic root of 3861496191 is about 1568.8636605404.

The spelling of 3861496191 in words is "three billion, eight hundred sixty-one million, four hundred ninety-six thousand, one hundred ninety-one".