386978091823 has 8 divisors (see below), whose sum is σ = 393737468400. Its totient is φ = 380258129088.

The previous prime is 386978091817. The next prime is 386978091833. The reversal of 386978091823 is 328190879683.

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 386978091823 - 2³⁷ = 249539138351 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 (386978091833) 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, 9833653 + ... + 9872926.

It is an arithmetic number, because the mean of its divisors is an integer number (49217183550).

Almost surely, 2^386978091823 is an apocalyptic number.

386978091823 is a deficient number, since it is larger than the sum of its proper divisors (6759376577).

386978091823 is a wasteful number, since it uses less digits than its factorization.

386978091823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19706921.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 386978091823 in words is "three hundred eighty-six billion, nine hundred seventy-eight million, ninety-one thousand, eight hundred twenty-three".