381862343309 has 4 divisors (see below), whose sum is σ = 381865091904. Its totient is φ = 381859594716.

The previous prime is 381862343263. The next prime is 381862343393. The reversal of 381862343309 is 903343268183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381862343309 - 2¹² = 381862339213 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 (381862343909) 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 3 ways as a sum of consecutive naturals, for example, 1154147 + ... + 1447680.

It is an arithmetic number, because the mean of its divisors is an integer number (95466272976).

Almost surely, 2^381862343309 is an apocalyptic number.

It is an amenable number.

381862343309 is a deficient number, since it is larger than the sum of its proper divisors (2748595).

381862343309 is a wasteful number, since it uses less digits than its factorization.

381862343309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748594.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 381862343309 in words is "three hundred eighty-one billion, eight hundred sixty-two million, three hundred forty-three thousand, three hundred nine".