1481187329 has 4 divisors (see below), whose sum is σ = 1482082884. Its totient is φ = 1480291776.

The previous prime is 1481187289. The next prime is 1481187341. The reversal of 1481187329 is 9237811841.

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 138697729 + 1342489600 = 11777^2 + 36640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481187329 - 2²⁴ = 1464410113 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 1481187329.

It is not an unprimeable number, because it can be changed into a prime (1481187359) 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, 445292 + ... + 448605.

It is an arithmetic number, because the mean of its divisors is an integer number (370520721).

Almost surely, 2^1481187329 is an apocalyptic number.

It is an amenable number.

1481187329 is a deficient number, since it is larger than the sum of its proper divisors (895555).

1481187329 is an equidigital number, since it uses as much as digits as its factorization.

1481187329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895554.

The product of its digits is 96768, while the sum is 44.

The square root of 1481187329 is about 38486.1966034577. The cubic root of 1481187329 is about 1139.9085104068.

The spelling of 1481187329 in words is "one billion, four hundred eighty-one million, one hundred eighty-seven thousand, three hundred twenty-nine".