381063364189861 has 8 divisors (see below), whose sum is σ = 382240604786040. Its totient is φ = 379887137149632.

The previous prime is 381063364189843. The next prime is 381063364189891. The reversal of 381063364189861 is 168981463360183.

It can be written as a sum of positive squares in 4 ways, for example, as 8667194880100 + 372396169309761 = 2944010^2 + 19297569^2 .

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 381063364189861 - 2⁵ = 381063364189829 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 (381063364189891) 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, 252635890 + ... + 254139763.

It is an arithmetic number, because the mean of its divisors is an integer number (47780075598255).

Almost surely, 2^{381063364189861} is an apocalyptic number.

It is an amenable number.

381063364189861 is a deficient number, since it is larger than the sum of its proper divisors (1177240596179).

381063364189861 is a wasteful number, since it uses less digits than its factorization.

381063364189861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506777975.

The product of its (nonzero) digits is 107495424, while the sum is 67.

The spelling of 381063364189861 in words is "three hundred eighty-one trillion, sixty-three billion, three hundred sixty-four million, one hundred eighty-nine thousand, eight hundred sixty-one".