3689229861 has 16 divisors (see below), whose sum is σ = 5474051520. Its totient is φ = 2455650000.

The previous prime is 3689229853. The next prime is 3689229889. The reversal of 3689229861 is 1689229863.

It is not a de Polignac number, because 3689229861 - 2³ = 3689229853 is a prime.

It is a super-3 number, since 3×3689229861³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3689229798 and 3689229807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689229811) 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, 88890 + ... + 123611.

It is an arithmetic number, because the mean of its divisors is an integer number (342128220).

Almost surely, 2^3689229861 is an apocalyptic number.

It is an amenable number.

3689229861 is a deficient number, since it is larger than the sum of its proper divisors (1784821659).

3689229861 is a wasteful number, since it uses less digits than its factorization.

3689229861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213153 (or 213147 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 3689229861 is about 60739.0307874599. The cubic root of 3689229861 is about 1545.1781979399.

The spelling of 3689229861 in words is "three billion, six hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred sixty-one".