3663126786 has 64 divisors (see below), whose sum is σ = 8405876736. Its totient is φ = 1053360000.

The previous prime is 3663126751. The next prime is 3663126847. The reversal of 3663126786 is 6876213663.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183286 + ... + 202286.

It is an arithmetic number, because the mean of its divisors is an integer number (131341824).

Almost surely, 2^3663126786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3663126786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4202938368).

3663126786 is an abundant number, since it is smaller than the sum of its proper divisors (4742749950).

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

3663126786 is a wasteful number, since it uses less digits than its factorization.

3663126786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19167.

The product of its digits is 1306368, while the sum is 48.

The square root of 3663126786 is about 60523.7704212155. The cubic root of 3663126786 is about 1541.5252760687.

The spelling of 3663126786 in words is "three billion, six hundred sixty-three million, one hundred twenty-six thousand, seven hundred eighty-six".