3887168686 has 4 divisors (see below), whose sum is σ = 5830753032. Its totient is φ = 1943584342.

The previous prime is 3887168683. The next prime is 3887168687. The reversal of 3887168686 is 6868617883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6868617883 = 1031 ⋅6662093.

It is a super-2 number, since 2×3887168686² = 30220160786837933192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887168683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971792170 + ... + 971792173.

It is an arithmetic number, because the mean of its divisors is an integer number (1457688258).

Almost surely, 2^3887168686 is an apocalyptic number.

3887168686 is a deficient number, since it is larger than the sum of its proper divisors (1943584346).

3887168686 is a wasteful number, since it uses less digits than its factorization.

3887168686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943584345.

The product of its digits is 18579456, while the sum is 61.

The square root of 3887168686 is about 62347.1626138672. The cubic root of 3887168686 is about 1572.3327576001.

The spelling of 3887168686 in words is "three billion, eight hundred eighty-seven million, one hundred sixty-eight thousand, six hundred eighty-six".