161004463 has 2 divisors, whose sum is σ = 161004464. Its totient is φ = 161004462.

The previous prime is 161004443. The next prime is 161004497. The reversal of 161004463 is 364400161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161004463 - 2⁹ = 161003951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161004443) 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, 80502231 + 80502232.

It is an arithmetic number, because the mean of its divisors is an integer number (80502232).

Almost surely, 2^161004463 is an apocalyptic number.

161004463 is a deficient number, since it is larger than the sum of its proper divisors (1).

161004463 is an equidigital number, since it uses as much as digits as its factorization.

161004463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 161004463 is about 12688.7534060679. The cubic root of 161004463 is about 544.0172092577.

The spelling of 161004463 in words is "one hundred sixty-one million, four thousand, four hundred sixty-three".