388730844493 has 2 divisors, whose sum is σ = 388730844494. Its totient is φ = 388730844492.

The previous prime is 388730844461. The next prime is 388730844511. The reversal of 388730844493 is 394448037883.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340399899844 + 48330944649 = 583438^2 + 219843^2 .

It is a cyclic number.

It is not a de Polignac number, because 388730844493 - 2⁵ = 388730844461 is a prime.

It is a super-2 number, since 2×388730844493² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388730844893) 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 as a sum of consecutive naturals, namely, 194365422246 + 194365422247.

It is an arithmetic number, because the mean of its divisors is an integer number (194365422247).

Almost surely, 2^388730844493 is an apocalyptic number.

It is an amenable number.

388730844493 is a deficient number, since it is larger than the sum of its proper divisors (1).

388730844493 is an equidigital number, since it uses as much as digits as its factorization.

388730844493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55738368, while the sum is 61.

The spelling of 388730844493 in words is "three hundred eighty-eight billion, seven hundred thirty million, eight hundred forty-four thousand, four hundred ninety-three".