1439545745 has 16 divisors (see below), whose sum is σ = 1895037120. Its totient is φ = 1041086400.

The previous prime is 1439545741. The next prime is 1439545813. The reversal of 1439545745 is 5475459341.

It is a happy number.

It is not a de Polignac number, because 1439545745 - 2² = 1439545741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1439545745.

It is not an unprimeable number, because it can be changed into a prime (1439545741) 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 15 ways as a sum of consecutive naturals, for example, 63266 + ... + 82955.

It is an arithmetic number, because the mean of its divisors is an integer number (118439820).

Almost surely, 2^1439545745 is an apocalyptic number.

It is an amenable number.

1439545745 is a deficient number, since it is larger than the sum of its proper divisors (455491375).

1439545745 is a wasteful number, since it uses less digits than its factorization.

1439545745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146416.

The product of its digits is 1512000, while the sum is 47.

The square root of 1439545745 is about 37941.3461147598. The cubic root of 1439545745 is about 1129.1244804132.

The spelling of 1439545745 in words is "one billion, four hundred thirty-nine million, five hundred forty-five thousand, seven hundred forty-five".