1941801668 has 12 divisors (see below), whose sum is σ = 3400286652. Its totient is φ = 970291200.

The previous prime is 1941801647. The next prime is 1941801707. The reversal of 1941801668 is 8661081491.

It can be written as a sum of positive squares in 2 ways, for example, as 1693487104 + 248314564 = 41152^2 + 15758^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145205 + ... + 158012.

It is an arithmetic number, because the mean of its divisors is an integer number (283357221).

Almost surely, 2^1941801668 is an apocalyptic number.

It is an amenable number.

1941801668 is a deficient number, since it is larger than the sum of its proper divisors (1458484984).

1941801668 is a wasteful number, since it uses less digits than its factorization.

1941801668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304822 (or 304820 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1941801668 is about 44065.8787271966. The cubic root of 1941801668 is about 1247.5796724764.

The spelling of 1941801668 in words is "one billion, nine hundred forty-one million, eight hundred one thousand, six hundred sixty-eight".