1545972479 has 4 divisors (see below), whose sum is σ = 1546055280. Its totient is φ = 1545889680.

The previous prime is 1545972451. The next prime is 1545972497. The reversal of 1545972479 is 9742795451.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1545972479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545972479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545977479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259 + ... + 55619.

It is an arithmetic number, because the mean of its divisors is an integer number (386513820).

Almost surely, 2^1545972479 is an apocalyptic number.

1545972479 is a deficient number, since it is larger than the sum of its proper divisors (82801).

1545972479 is an equidigital number, since it uses as much as digits as its factorization.

1545972479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82800.

The product of its digits is 3175200, while the sum is 53.

The square root of 1545972479 is about 39318.8565322035. The cubic root of 1545972479 is about 1156.2912862044.

It can be divided in two parts, 1545972 and 479, that added together give a palindrome (1546451).

The spelling of 1545972479 in words is "one billion, five hundred forty-five million, nine hundred seventy-two thousand, four hundred seventy-nine".