3718906506 has 192 divisors, whose sum is σ = 9963233280. Its totient is φ = 1017334080.

The previous prime is 3718906493. The next prime is 3718906523. The reversal of 3718906506 is 6056098173.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18877600 + ... + 18877796.

It is an arithmetic number, because the mean of its divisors is an integer number (51891840).

Almost surely, 2^3718906506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3718906506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4981616640).

3718906506 is an abundant number, since it is smaller than the sum of its proper divisors (6244326774).

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

3718906506 is a wasteful number, since it uses less digits than its factorization.

3718906506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 3718906506 is about 60982.8377988430. The cubic root of 3718906506 is about 1549.3103426516.

The spelling of 3718906506 in words is "three billion, seven hundred eighteen million, nine hundred six thousand, five hundred six".