138567645 has 16 divisors (see below), whose sum is σ = 246342720. Its totient is φ = 73902672.

The previous prime is 138567643. The next prime is 138567677. The reversal of 138567645 is 546765831.

It is not a de Polignac number, because 138567645 - 2¹ = 138567643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 138567645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138567643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513079 + ... + 513348.

It is an arithmetic number, because the mean of its divisors is an integer number (15396420).

Almost surely, 2^138567645 is an apocalyptic number.

138567645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138567645 is a deficient number, since it is larger than the sum of its proper divisors (107775075).

138567645 is a wasteful number, since it uses less digits than its factorization.

138567645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026441 (or 1026435 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 138567645 is about 11771.4759057647. The cubic root of 138567645 is about 517.4725043152.

It can be divided in two parts, 13 and 8567645, that added together give a palindrome (8567658).

The spelling of 138567645 in words is "one hundred thirty-eight million, five hundred sixty-seven thousand, six hundred forty-five".