3986311615 has 16 divisors (see below), whose sum is σ = 5619864096. Its totient is φ = 2676124800.

The previous prime is 3986311597. The next prime is 3986311619. The reversal of 3986311615 is 5161136893.

It is a happy number.

It is not a de Polignac number, because 3986311615 - 2⁹ = 3986311103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986311619) 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, 2786916 + ... + 2788345.

It is an arithmetic number, because the mean of its divisors is an integer number (351241506).

Almost surely, 2^3986311615 is an apocalyptic number.

3986311615 is a deficient number, since it is larger than the sum of its proper divisors (1633552481).

3986311615 is a wasteful number, since it uses less digits than its factorization.

3986311615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575290.

The product of its digits is 116640, while the sum is 43.

The square root of 3986311615 is about 63137.2442778429. The cubic root of 3986311615 is about 1585.5882361205.

The spelling of 3986311615 in words is "three billion, nine hundred eighty-six million, three hundred eleven thousand, six hundred fifteen".