1941381777881 has 8 divisors (see below), whose sum is σ = 2389392957504. Its totient is φ = 1536038329680.

The previous prime is 1941381777869. The next prime is 1941381777883. The reversal of 1941381777881 is 1887771831491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1941381777881 is a prime.

It is a super-2 number, since 2×1941381777881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1941381777883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10666932755 + ... + 10666932936.

It is an arithmetic number, because the mean of its divisors is an integer number (298674119688).

Almost surely, 2^{1941381777881} is an apocalyptic number.

It is an amenable number.

1941381777881 is a deficient number, since it is larger than the sum of its proper divisors (448011179623).

1941381777881 is a wasteful number, since it uses less digits than its factorization.

1941381777881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21333865711.

The product of its digits is 18966528, while the sum is 65.

The spelling of 1941381777881 in words is "one trillion, nine hundred forty-one billion, three hundred eighty-one million, seven hundred seventy-seven thousand, eight hundred eighty-one".