381781846747 has 16 divisors (see below), whose sum is σ = 462010590720. Its totient is φ = 307977095808.

The previous prime is 381781846727. The next prime is 381781846753. The reversal of 381781846747 is 747648187183.

It is a cyclic number.

It is not a de Polignac number, because 381781846747 - 2¹⁵ = 381781813979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381781846727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2832868 + ... + 2964574.

It is an arithmetic number, because the mean of its divisors is an integer number (28875661920).

Almost surely, 2^381781846747 is an apocalyptic number.

381781846747 is a deficient number, since it is larger than the sum of its proper divisors (80228743973).

381781846747 is a wasteful number, since it uses less digits than its factorization.

381781846747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156090.

The product of its digits is 50577408, while the sum is 64.

It can be divided in two parts, 381781 and 846747, that added together give a triangular number (1228528 = T₁₅₆₇).

The spelling of 381781846747 in words is "three hundred eighty-one billion, seven hundred eighty-one million, eight hundred forty-six thousand, seven hundred forty-seven".