1601297273 has 2 divisors, whose sum is σ = 1601297274. Its totient is φ = 1601297272.

The previous prime is 1601297251. The next prime is 1601297279. The reversal of 1601297273 is 3727921061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1272491584 + 328805689 = 35672^2 + 18133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601297273 - 2⁸ = 1601297017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1601297279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800648636 + 800648637.

It is an arithmetic number, because the mean of its divisors is an integer number (800648637).

Almost surely, 2^1601297273 is an apocalyptic number.

It is an amenable number.

1601297273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601297273 is an equidigital number, since it uses as much as digits as its factorization.

1601297273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 1601297273 is about 40016.2126268841. The cubic root of 1601297273 is about 1169.9231139969.

The spelling of 1601297273 in words is "one billion, six hundred one million, two hundred ninety-seven thousand, two hundred seventy-three".