3609123912 has 96 divisors (see below), whose sum is σ = 10359770400. Its totient is φ = 1164166560.

The previous prime is 3609123887. The next prime is 3609123941. The reversal of 3609123912 is 2193219063.

It is a happy number.

3609123912 is a `hidden beast` number, since 3 + 609 + 1 + 2 + 39 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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, 198883 + ... + 216269.

It is an arithmetic number, because the mean of its divisors is an integer number (107914275).

Almost surely, 2^3609123912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3609123912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5179885200).

3609123912 is an abundant number, since it is smaller than the sum of its proper divisors (6750646488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3609123912 is a wasteful number, since it uses less digits than its factorization.

3609123912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17464 (or 17423 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 3609123912 is about 60075.9844863153. The cubic root of 3609123912 is about 1533.9125391316.

The spelling of 3609123912 in words is "three billion, six hundred nine million, one hundred twenty-three thousand, nine hundred twelve".