3609821376 has 294 divisors, whose sum is σ = 12501318660. Its totient is φ = 1030724352.

The previous prime is 3609821351. The next prime is 3609821393. The reversal of 3609821376 is 6731289063.

3609821376 is a `hidden beast` number, since 3 + 609 + 8 + 2 + 1 + 37 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (294).

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 2285355 + ... + 2286933.

Almost surely, 2^3609821376 is an apocalyptic number.

3609821376 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3609821376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6250659330).

3609821376 is an abundant number, since it is smaller than the sum of its proper divisors (8891497284).

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

3609821376 is an equidigital number, since it uses as much as digits as its factorization.

3609821376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 3609821376 is about 60081.7890545879. The cubic root of 3609821376 is about 1534.0113424139.

The spelling of 3609821376 in words is "three billion, six hundred nine million, eight hundred twenty-one thousand, three hundred seventy-six".