381865461517 has 8 divisors (see below), whose sum is σ = 382545856512. Its totient is φ = 381185641200.

The previous prime is 381865461499. The next prime is 381865461557. The reversal of 381865461517 is 715164568183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381865461517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381865461557) 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, 1197603 + ... + 1482559.

It is an arithmetic number, because the mean of its divisors is an integer number (47818232064).

Almost surely, 2^381865461517 is an apocalyptic number.

It is an amenable number.

381865461517 is a deficient number, since it is larger than the sum of its proper divisors (680394995).

381865461517 is a wasteful number, since it uses less digits than its factorization.

381865461517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287339.

The product of its digits is 4838400, while the sum is 55.

The spelling of 381865461517 in words is "three hundred eighty-one billion, eight hundred sixty-five million, four hundred sixty-one thousand, five hundred seventeen".