1144620413 has 4 divisors (see below), whose sum is σ = 1145004828. Its totient is φ = 1144236000.

The previous prime is 1144620377. The next prime is 1144620437. The reversal of 1144620413 is 3140264411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 417670969 + 726949444 = 20437^2 + 26962^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144620413 - 2⁶ = 1144620349 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 (1144620443) 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, 187706 + ... + 193707.

It is an arithmetic number, because the mean of its divisors is an integer number (286251207).

Almost surely, 2^1144620413 is an apocalyptic number.

It is an amenable number.

1144620413 is a deficient number, since it is larger than the sum of its proper divisors (384415).

1144620413 is an equidigital number, since it uses as much as digits as its factorization.

1144620413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384414.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1144620413 is about 33832.2392548882. The cubic root of 1144620413 is about 1046.0533362316.

Adding to 1144620413 its reverse (3140264411), we get a palindrome (4284884824).

The spelling of 1144620413 in words is "one billion, one hundred forty-four million, six hundred twenty thousand, four hundred thirteen".