3856659101 has 4 divisors (see below), whose sum is σ = 3892702752. Its totient is φ = 3820615452.

The previous prime is 3856659029. The next prime is 3856659133. The reversal of 3856659101 is 1019566583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1019566583 = 7 ⋅145652369.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3856659101 is a prime.

It is a super-2 number, since 2×3856659101² = 29747638842652256402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856652101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18021665 + ... + 18021878.

It is an arithmetic number, because the mean of its divisors is an integer number (973175688).

Almost surely, 2^3856659101 is an apocalyptic number.

It is an amenable number.

3856659101 is a deficient number, since it is larger than the sum of its proper divisors (36043651).

3856659101 is a wasteful number, since it uses less digits than its factorization.

3856659101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36043650.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 3856659101 is about 62102.0056117353. The cubic root of 3856659101 is about 1568.2083095898.

The spelling of 3856659101 in words is "three billion, eight hundred fifty-six million, six hundred fifty-nine thousand, one hundred one".