3865688197 has 8 divisors (see below), whose sum is σ = 4570272000. Its totient is φ = 3199190064.

The previous prime is 3865688179. The next prime is 3865688207. The reversal of 3865688197 is 7918865683.

3865688197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-3865688197 is a prime.

It is a super-2 number, since 2×3865688197² = 29887090472850221618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865688107) 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, 9521197 + ... + 9521602.

It is an arithmetic number, because the mean of its divisors is an integer number (571284000).

Almost surely, 2^3865688197 is an apocalyptic number.

It is an amenable number.

3865688197 is a deficient number, since it is larger than the sum of its proper divisors (704583803).

3865688197 is a wasteful number, since it uses less digits than its factorization.

3865688197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19042835.

The product of its digits is 17418240, while the sum is 61.

The square root of 3865688197 is about 62174.6588008330. The cubic root of 3865688197 is about 1569.4311700517.

The spelling of 3865688197 in words is "three billion, eight hundred sixty-five million, six hundred eighty-eight thousand, one hundred ninety-seven".