388375913 has 2 divisors, whose sum is σ = 388375914. Its totient is φ = 388375912.

The previous prime is 388375909. The next prime is 388375919. The reversal of 388375913 is 319573883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236913664 + 151462249 = 15392^2 + 12307^2 .

It is a cyclic number.

It is not a de Polignac number, because 388375913 - 2² = 388375909 is a prime.

It is not a weakly prime, because it can be changed into another prime (388375919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194187956 + 194187957.

It is an arithmetic number, because the mean of its divisors is an integer number (194187957).

Almost surely, 2^388375913 is an apocalyptic number.

It is an amenable number.

388375913 is a deficient number, since it is larger than the sum of its proper divisors (1).

388375913 is an equidigital number, since it uses as much as digits as its factorization.

388375913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 388375913 is about 19707.2553390877. The cubic root of 388375913 is about 729.5987743253.

The spelling of 388375913 in words is "three hundred eighty-eight million, three hundred seventy-five thousand, nine hundred thirteen".