1388488066 has 16 divisors (see below), whose sum is σ = 2385956160. Its totient is φ = 593643600.

The previous prime is 1388488051. The next prime is 1388488091. The reversal of 1388488066 is 6608848831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112485 + ... + 124216.

It is an arithmetic number, because the mean of its divisors is an integer number (149122260).

Almost surely, 2^1388488066 is an apocalyptic number.

1388488066 is a deficient number, since it is larger than the sum of its proper divisors (997468094).

1388488066 is a wasteful number, since it uses less digits than its factorization.

1388488066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237129.

The product of its (nonzero) digits is 1769472, while the sum is 52.

The square root of 1388488066 is about 37262.4216335976. The cubic root of 1388488066 is about 1115.6142435242.

The spelling of 1388488066 in words is "one billion, three hundred eighty-eight million, four hundred eighty-eight thousand, sixty-six".