1387553169 has 16 divisors (see below), whose sum is σ = 1965597120. Its totient is φ = 868996800.

The previous prime is 1387553159. The next prime is 1387553191. The reversal of 1387553169 is 9613557831.

It is not a de Polignac number, because 1387553169 - 2⁵ = 1387553137 is a prime.

It is a super-2 number, since 2×1387553169² = 3850607593603885122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1387553159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212307 + ... + 218744.

It is an arithmetic number, because the mean of its divisors is an integer number (122849820).

Almost surely, 2^1387553169 is an apocalyptic number.

It is an amenable number.

1387553169 is a deficient number, since it is larger than the sum of its proper divisors (578043951).

1387553169 is a wasteful number, since it uses less digits than its factorization.

1387553169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431120.

The product of its digits is 680400, while the sum is 48.

The square root of 1387553169 is about 37249.8747514673. The cubic root of 1387553169 is about 1115.3637987874.

The spelling of 1387553169 in words is "one billion, three hundred eighty-seven million, five hundred fifty-three thousand, one hundred sixty-nine".