3686951121 has 24 divisors (see below), whose sum is σ = 5929481664. Its totient is φ = 1995939360.

The previous prime is 3686951111. The next prime is 3686951153. The reversal of 3686951121 is 1211596863.

3686951121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3686951121 - 2¹⁰ = 3686950097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3686951111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235590 + ... + 250751.

It is an arithmetic number, because the mean of its divisors is an integer number (247061736).

Almost surely, 2^3686951121 is an apocalyptic number.

It is an amenable number.

3686951121 is a deficient number, since it is larger than the sum of its proper divisors (2242530543).

3686951121 is a wasteful number, since it uses less digits than its factorization.

3686951121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486389 (or 486370 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 3686951121 is about 60720.2694411018. The cubic root of 3686951121 is about 1544.8599938066.

It can be divided in two parts, 36869 and 51121, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 3686951121 in words is "three billion, six hundred eighty-six million, nine hundred fifty-one thousand, one hundred twenty-one".