388228598787 has 4 divisors (see below), whose sum is σ = 517638131720. Its totient is φ = 258819065856.

The previous prime is 388228598761. The next prime is 388228598801. The reversal of 388228598787 is 787895822883.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 388228598787 - 2¹⁹ = 388228074499 is a prime.

It is a super-2 number, since 2×388228598787² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388228590787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64704766462 + ... + 64704766467.

It is an arithmetic number, because the mean of its divisors is an integer number (129409532930).

Almost surely, 2^388228598787 is an apocalyptic number.

388228598787 is a deficient number, since it is larger than the sum of its proper divisors (129409532933).

388228598787 is a wasteful number, since it uses less digits than its factorization.

388228598787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129409532932.

The product of its digits is 867041280, while the sum is 75.

The spelling of 388228598787 in words is "three hundred eighty-eight billion, two hundred twenty-eight million, five hundred ninety-eight thousand, seven hundred eighty-seven".