381029573646 has 48 divisors (see below), whose sum is σ = 866217774240. Its totient is φ = 120816463680.

The previous prime is 381029573641. The next prime is 381029573657. The reversal of 381029573646 is 646375920183.

381029573646 is a `hidden beast` number, since 3 + 8 + 1 + 0 + 2 + 9 + 573 + 64 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 381029573592 and 381029573601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381029573641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2467501 + ... + 2617368.

It is an arithmetic number, because the mean of its divisors is an integer number (18046203630).

It is a 1-persistent number, because it is pandigital, but 2⋅381029573646 = 762059147292 is not.

Almost surely, 2^381029573646 is an apocalyptic number.

381029573646 is an abundant number, since it is smaller than the sum of its proper divisors (485188200594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381029573646 is a wasteful number, since it uses less digits than its factorization.

381029573646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085081 (or 5085078 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 381029573646 in words is "three hundred eighty-one billion, twenty-nine million, five hundred seventy-three thousand, six hundred forty-six".