3491562816 has 504 divisors, whose sum is σ = 13009351680. Its totient is φ = 887169024.

The previous prime is 3491562803. The next prime is 3491562839. The reversal of 3491562816 is 6182651943.

3491562816 is a `hidden beast` number, since 3 + 4 + 9 + 1 + 5 + 628 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9116161 + ... + 9116543.

Almost surely, 2^3491562816 is an apocalyptic number.

3491562816 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 3491562816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6504675840).

3491562816 is an abundant number, since it is smaller than the sum of its proper divisors (9517788864).

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

3491562816 is a wasteful number, since it uses less digits than its factorization.

3491562816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 431 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3491562816 is about 59089.4475858423. The cubic root of 3491562816 is about 1517.0734919168.

The spelling of 3491562816 in words is "three billion, four hundred ninety-one million, five hundred sixty-two thousand, eight hundred sixteen".