381641788769 has 8 divisors (see below), whose sum is σ = 383608697472. Its totient is φ = 379678788160.

The previous prime is 381641788747. The next prime is 381641788771. The reversal of 381641788769 is 967887146183.

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-381641788769 is a prime.

It is a super-2 number, since 2×381641788769² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381641788699 and 381641788708.

It is not an unprimeable number, because it can be changed into a prime (381641788709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781112 + ... + 1171929.

It is an arithmetic number, because the mean of its divisors is an integer number (47951087184).

Almost surely, 2^381641788769 is an apocalyptic number.

It is an amenable number.

381641788769 is a deficient number, since it is larger than the sum of its proper divisors (1966908703).

381641788769 is a wasteful number, since it uses less digits than its factorization.

381641788769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954047.

The product of its digits is 97542144, while the sum is 68.

The spelling of 381641788769 in words is "three hundred eighty-one billion, six hundred forty-one million, seven hundred eighty-eight thousand, seven hundred sixty-nine".