1301638441 has 4 divisors (see below), whose sum is σ = 1315057492. Its totient is φ = 1288219392.

The previous prime is 1301638411. The next prime is 1301638483. The reversal of 1301638441 is 1448361031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1448361031 = 13 ⋅111412387.

It can be written as a sum of positive squares in 2 ways, for example, as 947408400 + 354230041 = 30780^2 + 18821^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301638441 - 2²⁹ = 764767529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301638411) 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, 6709380 + ... + 6709573.

It is an arithmetic number, because the mean of its divisors is an integer number (328764373).

Almost surely, 2^1301638441 is an apocalyptic number.

It is an amenable number.

1301638441 is a deficient number, since it is larger than the sum of its proper divisors (13419051).

1301638441 is an equidigital number, since it uses as much as digits as its factorization.

1301638441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13419050.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1301638441 is about 36078.2266886830. The cubic root of 1301638441 is about 1091.8511989927.

Adding to 1301638441 its reverse (1448361031), we get a palindrome (2749999472).

The spelling of 1301638441 in words is "one billion, three hundred one million, six hundred thirty-eight thousand, four hundred forty-one".