3818986965 has 24 divisors (see below), whose sum is σ = 6664015800. Its totient is φ = 2023119744.

The previous prime is 3818986957. The next prime is 3818986967. The reversal of 3818986965 is 5696898183.

It can be written as a sum of positive squares in 4 ways, for example, as 43007364 + 3775979601 = 6558^2 + 61449^2 .

It is not a de Polignac number, because 3818986965 - 2³ = 3818986957 is a prime.

It is a super-2 number, since 2×3818986965² = 29169322877679822450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818986967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278082 + ... + 291491.

It is an arithmetic number, because the mean of its divisors is an integer number (277667325).

Almost surely, 2^3818986965 is an apocalyptic number.

It is an amenable number.

3818986965 is a deficient number, since it is larger than the sum of its proper divisors (2845028835).

3818986965 is a wasteful number, since it uses less digits than its factorization.

3818986965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569733 (or 569730 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The square root of 3818986965 is about 61797.9527573527. The cubic root of 3818986965 is about 1563.0854675530.

The spelling of 3818986965 in words is "three billion, eight hundred eighteen million, nine hundred eighty-six thousand, nine hundred sixty-five".