1601269 has 2 divisors, whose sum is σ = 1601270. Its totient is φ = 1601268.

The previous prime is 1601267. The next prime is 1601273. The reversal of 1601269 is 9621061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 26244 = 1255^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601269 - 2¹ = 1601267 is a prime.

It is a super-2 number, since 2×1601269² = 5128124820722, which contains 22 as substring.

Together with 1601267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800634 + 800635.

It is an arithmetic number, because the mean of its divisors is an integer number (800635).

2^1601269 is an apocalyptic number.

It is an amenable number.

1601269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601269 is an equidigital number, since it uses as much as digits as its factorization.

1601269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1601269 is about 1265.4125809395. The cubic root of 1601269 is about 116.9916228448.

The spelling of 1601269 in words is "one million, six hundred one thousand, two hundred sixty-nine".