3491609856 has 432 divisors, whose sum is σ = 11587419648. Its totient is φ = 928972800.

The previous prime is 3491609833. The next prime is 3491609861. The reversal of 3491609856 is 6589061943.

It is a junction number, because it is equal to n+sod(n) for n = 3491609799 and 3491609808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47830236 + ... + 47830308.

Almost surely, 2^3491609856 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 3491609856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5793709824).

3491609856 is an abundant number, since it is smaller than the sum of its proper divisors (8095809792).

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

3491609856 is a wasteful number, since it uses less digits than its factorization.

3491609856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 3491609856 is about 59089.8456251157. The cubic root of 3491609856 is about 1517.0803047988.

The spelling of 3491609856 in words is "three billion, four hundred ninety-one million, six hundred nine thousand, eight hundred fifty-six".