1301370661 has 2 divisors, whose sum is σ = 1301370662. Its totient is φ = 1301370660.

The previous prime is 1301370617. The next prime is 1301370673. The reversal of 1301370661 is 1660731031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213198561 + 88172100 = 34831^2 + 9390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301370661 - 2⁹ = 1301370149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301370601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650685330 + 650685331.

It is an arithmetic number, because the mean of its divisors is an integer number (650685331).

Almost surely, 2^1301370661 is an apocalyptic number.

It is an amenable number.

1301370661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301370661 is an equidigital number, since it uses as much as digits as its factorization.

1301370661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1301370661 is about 36074.5153952205. The cubic root of 1301370661 is about 1091.7763200410.

It can be divided in two parts, 1301370 and 661, that added together give a palindrome (1302031).

The spelling of 1301370661 in words is "one billion, three hundred one million, three hundred seventy thousand, six hundred sixty-one".