388109663 has 2 divisors, whose sum is σ = 388109664. Its totient is φ = 388109662.

The previous prime is 388109653. The next prime is 388109693. The reversal of 388109663 is 366901883.

It is a weak prime.

It is an emirp because it is prime and its reverse (366901883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388109663 - 2¹⁸ = 387847519 is a prime.

It is a super-2 number, since 2×388109663² = 301258221027947138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388109653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194054831 + 194054832.

It is an arithmetic number, because the mean of its divisors is an integer number (194054832).

Almost surely, 2^388109663 is an apocalyptic number.

388109663 is a deficient number, since it is larger than the sum of its proper divisors (1).

388109663 is an equidigital number, since it uses as much as digits as its factorization.

388109663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 388109663 is about 19700.4990545925. The cubic root of 388109663 is about 729.4320114250.

The spelling of 388109663 in words is "three hundred eighty-eight million, one hundred nine thousand, six hundred sixty-three".