3881297766 has 16 divisors (see below), whose sum is σ = 8030271600. Its totient is φ = 1249153248.

The previous prime is 3881297747. The next prime is 3881297851. The reversal of 3881297766 is 6677921883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11152981 + ... + 11153328.

It is an arithmetic number, because the mean of its divisors is an integer number (501891975).

Almost surely, 2^3881297766 is an apocalyptic number.

3881297766 is an abundant number, since it is smaller than the sum of its proper divisors (4148973834).

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

3881297766 is a wasteful number, since it uses less digits than its factorization.

3881297766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22306343.

The product of its digits is 6096384, while the sum is 57.

The square root of 3881297766 is about 62300.0623274167. The cubic root of 3881297766 is about 1571.5407766153.

The spelling of 3881297766 in words is "three billion, eight hundred eighty-one million, two hundred ninety-seven thousand, seven hundred sixty-six".