8381806144 has 14 divisors (see below), whose sum is σ = 16632646694. Its totient is φ = 4190903040.

The previous prime is 8381806117. The next prime is 8381806151. The reversal of 8381806144 is 4416081838.

It can be written as a sum of positive squares in only one way, i.e., 6658560000 + 1723246144 = 81600^2 + 41512^2 .

It is a super-2 number, since 2×8381806144² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8381806144.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65482797 + ... + 65482924.

Almost surely, 2^8381806144 is an apocalyptic number.

It is an amenable number.

8381806144 is a deficient number, since it is larger than the sum of its proper divisors (8250840550).

8381806144 is a wasteful number, since it uses less digits than its factorization.

8381806144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130965733 (or 130965723 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 8381806144 is about 91552.2044737318. The cubic root of 8381806144 is about 2031.3240202972.

The spelling of 8381806144 in words is "eight billion, three hundred eighty-one million, eight hundred six thousand, one hundred forty-four".