381846391811 has 8 divisors (see below), whose sum is σ = 397529523120. Its totient is φ = 366330994848.

The previous prime is 381846391783. The next prime is 381846391819. The reversal of 381846391811 is 118193648183.

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

It is a cyclic number.

It is not a de Polignac number, because 381846391811 - 2²⁶ = 381779282947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381846391819) 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, 41928941 + ... + 41938046.

It is an arithmetic number, because the mean of its divisors is an integer number (49691190390).

Almost surely, 2^381846391811 is an apocalyptic number.

381846391811 is a deficient number, since it is larger than the sum of its proper divisors (15683131309).

381846391811 is a wasteful number, since it uses less digits than its factorization.

381846391811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83867173.

The product of its digits is 995328, while the sum is 53.

The spelling of 381846391811 in words is "three hundred eighty-one billion, eight hundred forty-six million, three hundred ninety-one thousand, eight hundred eleven".