381338256085 has 8 divisors (see below), whose sum is σ = 457760053080. Its totient is φ = 304967841024.

The previous prime is 381338256083. The next prime is 381338256097. The reversal of 381338256085 is 580652833183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2523856644 + 378814399441 = 50238^2 + 615479^2 .

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 381338256085 - 2¹ = 381338256083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381338256083) 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, 12829152 + ... + 12858841.

It is an arithmetic number, because the mean of its divisors is an integer number (57220006635).

Almost surely, 2^381338256085 is an apocalyptic number.

It is an amenable number.

381338256085 is a deficient number, since it is larger than the sum of its proper divisors (76421796995).

381338256085 is a wasteful number, since it uses less digits than its factorization.

381338256085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25690967.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 381338256085 in words is "three hundred eighty-one billion, three hundred thirty-eight million, two hundred fifty-six thousand, eighty-five".