381857325726 has 16 divisors (see below), whose sum is σ = 763932960000. Its totient is φ = 127249390488.

The previous prime is 381857325721. The next prime is 381857325763. The reversal of 381857325726 is 627523758183.

It is a super-2 number, since 2×381857325726² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381857325721) 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, 9073446 + ... + 9115433.

It is an arithmetic number, because the mean of its divisors is an integer number (47745810000).

Almost surely, 2^381857325726 is an apocalyptic number.

381857325726 is an abundant number, since it is smaller than the sum of its proper divisors (382075634274).

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

381857325726 is a wasteful number, since it uses less digits than its factorization.

381857325726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18192383.

The product of its digits is 16934400, while the sum is 57.

The spelling of 381857325726 in words is "three hundred eighty-one billion, eight hundred fifty-seven million, three hundred twenty-five thousand, seven hundred twenty-six".