3861192687 has 16 divisors (see below), whose sum is σ = 5631601152. Its totient is φ = 2333733120.

The previous prime is 3861192661. The next prime is 3861192707. The reversal of 3861192687 is 7862911683.

It is not a de Polignac number, because 3861192687 - 2¹⁵ = 3861159919 is a prime.

It is a super-2 number, since 2×3861192687² = 29817617932284559938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861192187) 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, 147298 + ... + 171519.

It is an arithmetic number, because the mean of its divisors is an integer number (351975072).

Almost surely, 2^3861192687 is an apocalyptic number.

3861192687 is a deficient number, since it is larger than the sum of its proper divisors (1770408465).

3861192687 is a wasteful number, since it uses less digits than its factorization.

3861192687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319198.

The product of its digits is 870912, while the sum is 51.

The square root of 3861192687 is about 62138.4960149503. The cubic root of 3861192687 is about 1568.8225565358.

The spelling of 3861192687 in words is "three billion, eight hundred sixty-one million, one hundred ninety-two thousand, six hundred eighty-seven".