1388568169 has 8 divisors (see below), whose sum is σ = 1469856960. Its totient is φ = 1309506576.

The previous prime is 1388568119. The next prime is 1388568187. The reversal of 1388568169 is 9618658831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1388568169 - 2²¹ = 1386471017 is a prime.

It is a super-2 number, since 2×1388568169² = 3856243119920025122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1388568119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555517 + ... + 558010.

It is an arithmetic number, because the mean of its divisors is an integer number (183732120).

Almost surely, 2^1388568169 is an apocalyptic number.

It is an amenable number.

1388568169 is a deficient number, since it is larger than the sum of its proper divisors (81288791).

1388568169 is a wasteful number, since it uses less digits than its factorization.

1388568169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113599.

The product of its digits is 2488320, while the sum is 55.

The square root of 1388568169 is about 37263.4964677229. The cubic root of 1388568169 is about 1115.6356966745.

The spelling of 1388568169 in words is "one billion, three hundred eighty-eight million, five hundred sixty-eight thousand, one hundred sixty-nine".