1323753157 has 2 divisors, whose sum is σ = 1323753158. Its totient is φ = 1323753156.

The previous prime is 1323753133. The next prime is 1323753203. The reversal of 1323753157 is 7513573231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1259256196 + 64496961 = 35486^2 + 8031^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323753157 - 2¹⁵ = 1323720389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323753257) 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, 661876578 + 661876579.

It is an arithmetic number, because the mean of its divisors is an integer number (661876579).

Almost surely, 2^1323753157 is an apocalyptic number.

It is an amenable number.

1323753157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323753157 is an equidigital number, since it uses as much as digits as its factorization.

1323753157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 37.

The square root of 1323753157 is about 36383.4187096265. The cubic root of 1323753157 is about 1097.9999903230. Note that the first 5 decimals are identical.

The spelling of 1323753157 in words is "one billion, three hundred twenty-three million, seven hundred fifty-three thousand, one hundred fifty-seven".