1436168161 has 4 divisors (see below), whose sum is σ = 1439860500. Its totient is φ = 1432475824.

The previous prime is 1436168087. The next prime is 1436168179. The reversal of 1436168161 is 1618616341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 989479936 + 446688225 = 31456^2 + 21135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436168161 - 2¹³ = 1436159969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1436168161.

It is not an unprimeable number, because it can be changed into a prime (1436198161) 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 in 3 ways as a sum of consecutive naturals, for example, 1845586 + ... + 1846363.

It is an arithmetic number, because the mean of its divisors is an integer number (359965125).

Almost surely, 2^1436168161 is an apocalyptic number.

It is an amenable number.

1436168161 is a deficient number, since it is larger than the sum of its proper divisors (3692339).

1436168161 is an equidigital number, since it uses as much as digits as its factorization.

1436168161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3692338.

The product of its digits is 20736, while the sum is 37.

The square root of 1436168161 is about 37896.8093775716. The cubic root of 1436168161 is about 1128.2407064006.

The spelling of 1436168161 in words is "one billion, four hundred thirty-six million, one hundred sixty-eight thousand, one hundred sixty-one".