1321195937 has 2 divisors, whose sum is σ = 1321195938. Its totient is φ = 1321195936.

The previous prime is 1321195933. The next prime is 1321196029. The reversal of 1321195937 is 7395911231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304582161 + 16613776 = 36119^2 + 4076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321195937 - 2² = 1321195933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321195894 and 1321195903.

It is not a weakly prime, because it can be changed into another prime (1321195933) 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 as a sum of consecutive naturals, namely, 660597968 + 660597969.

It is an arithmetic number, because the mean of its divisors is an integer number (660597969).

Almost surely, 2^1321195937 is an apocalyptic number.

It is an amenable number.

1321195937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321195937 is an equidigital number, since it uses as much as digits as its factorization.

1321195937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 41.

The square root of 1321195937 is about 36348.2590642248. The cubic root of 1321195937 is about 1097.2924975117.

The spelling of 1321195937 in words is "one billion, three hundred twenty-one million, one hundred ninety-five thousand, nine hundred thirty-seven".