1601536369 has 2 divisors, whose sum is σ = 1601536370. Its totient is φ = 1601536368.

The previous prime is 1601536361. The next prime is 1601536381. The reversal of 1601536369 is 9636351061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024960225 + 576576144 = 32015^2 + 24012^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601536369 - 2³ = 1601536361 is a prime.

It is a super-2 number, since 2×1601536369² = 5129837482459408322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1601536361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800768184 + 800768185.

It is an arithmetic number, because the mean of its divisors is an integer number (800768185).

Almost surely, 2^1601536369 is an apocalyptic number.

It is an amenable number.

1601536369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601536369 is an equidigital number, since it uses as much as digits as its factorization.

1601536369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 1601536369 is about 40019.2000044978. The cubic root of 1601536369 is about 1169.9813397077.

The spelling of 1601536369 in words is "one billion, six hundred one million, five hundred thirty-six thousand, three hundred sixty-nine".