381475756852 has 24 divisors (see below), whose sum is σ = 678614144040. Its totient is φ = 187586808960.

The previous prime is 381475756829. The next prime is 381475756853. The reversal of 381475756852 is 258657574183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50590805776 + 330884951076 = 224924^2 + 575226^2 .

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381475756853) 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, 1871958 + ... + 2065714.

It is an arithmetic number, because the mean of its divisors is an integer number (28275589335).

Almost surely, 2^381475756852 is an apocalyptic number.

It is an amenable number.

381475756852 is a deficient number, since it is larger than the sum of its proper divisors (297138387188).

381475756852 is a wasteful number, since it uses less digits than its factorization.

381475756852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201891 (or 201889 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 61.

The spelling of 381475756852 in words is "three hundred eighty-one billion, four hundred seventy-five million, seven hundred fifty-six thousand, eight hundred fifty-two".