161539067 has 2 divisors, whose sum is σ = 161539068. Its totient is φ = 161539066.

The previous prime is 161539039. The next prime is 161539093. The reversal of 161539067 is 760935161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161539067 - 2¹⁰ = 161538043 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161539067.

It is not a weakly prime, because it can be changed into another prime (161530067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80769533 + 80769534.

It is an arithmetic number, because the mean of its divisors is an integer number (80769534).

Almost surely, 2^161539067 is an apocalyptic number.

161539067 is a deficient number, since it is larger than the sum of its proper divisors (1).

161539067 is an equidigital number, since it uses as much as digits as its factorization.

161539067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 161539067 is about 12709.8020047521. The cubic root of 161539067 is about 544.6186676801.

The spelling of 161539067 in words is "one hundred sixty-one million, five hundred thirty-nine thousand, sixty-seven".