1388883565 has 16 divisors (see below), whose sum is σ = 1769918400. Its totient is φ = 1043304192.

The previous prime is 1388883523. The next prime is 1388883577. The reversal of 1388883565 is 5653888831.

It is a cyclic number.

It is not a de Polignac number, because 1388883565 - 2⁹ = 1388883053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53955 + ... + 75424.

It is an arithmetic number, because the mean of its divisors is an integer number (110619900).

Almost surely, 2^1388883565 is an apocalyptic number.

It is an amenable number.

1388883565 is a deficient number, since it is larger than the sum of its proper divisors (381034835).

1388883565 is a wasteful number, since it uses less digits than its factorization.

1388883565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129516.

The product of its digits is 5529600, while the sum is 55.

The square root of 1388883565 is about 37267.7281974633. The cubic root of 1388883565 is about 1115.7201578738.

The spelling of 1388883565 in words is "one billion, three hundred eighty-eight million, eight hundred eighty-three thousand, five hundred sixty-five".