381328317586 has 4 divisors (see below), whose sum is σ = 571992476382. Its totient is φ = 190664158792.

The previous prime is 381328317581. The next prime is 381328317589. The reversal of 381328317586 is 685713823183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 371740187025 + 9588130561 = 609705^2 + 97919^2 .

It is a super-2 number, since 2×381328317586² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381328317581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95332079395 + ... + 95332079398.

Almost surely, 2^381328317586 is an apocalyptic number.

381328317586 is a deficient number, since it is larger than the sum of its proper divisors (190664158796).

381328317586 is a wasteful number, since it uses less digits than its factorization.

381328317586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190664158795.

The product of its digits is 5806080, while the sum is 55.

The spelling of 381328317586 in words is "three hundred eighty-one billion, three hundred twenty-eight million, three hundred seventeen thousand, five hundred eighty-six".