1320147541 has 4 divisors (see below), whose sum is σ = 1365669900. Its totient is φ = 1274625184.

The previous prime is 1320147533. The next prime is 1320147547. The reversal of 1320147541 is 1457410231.

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 506700100 + 813447441 = 22510^2 + 28521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320147541 - 2³ = 1320147533 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 (1320147547) 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, 22761136 + ... + 22761193.

It is an arithmetic number, because the mean of its divisors is an integer number (341417475).

Almost surely, 2^1320147541 is an apocalyptic number.

It is an amenable number.

1320147541 is a deficient number, since it is larger than the sum of its proper divisors (45522359).

1320147541 is an equidigital number, since it uses as much as digits as its factorization.

1320147541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45522358.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1320147541 is about 36333.8346586209. The cubic root of 1320147541 is about 1097.0021793600.

Adding to 1320147541 its reverse (1457410231), we get a palindrome (2777557772).

The spelling of 1320147541 in words is "one billion, three hundred twenty million, one hundred forty-seven thousand, five hundred forty-one".