1484778613 has 4 divisors (see below), whose sum is σ = 1509119308. Its totient is φ = 1460437920.

The previous prime is 1484778611. The next prime is 1484778629. The reversal of 1484778613 is 3168774841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3168774841 = 127 ⋅24950983.

It can be written as a sum of positive squares in 2 ways, for example, as 400920529 + 1083858084 = 20023^2 + 32922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1484778613 - 2¹ = 1484778611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1484778611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12170256 + ... + 12170377.

It is an arithmetic number, because the mean of its divisors is an integer number (377279827).

Almost surely, 2^1484778613 is an apocalyptic number.

It is an amenable number.

1484778613 is a deficient number, since it is larger than the sum of its proper divisors (24340695).

1484778613 is an equidigital number, since it uses as much as digits as its factorization.

1484778613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24340694.

The product of its digits is 903168, while the sum is 49.

The square root of 1484778613 is about 38532.8251364989. The cubic root of 1484778613 is about 1140.8290401760.

The spelling of 1484778613 in words is "one billion, four hundred eighty-four million, seven hundred seventy-eight thousand, six hundred thirteen".