161264069 has 2 divisors, whose sum is σ = 161264070. Its totient is φ = 161264068.

The previous prime is 161264027. The next prime is 161264161. The reversal of 161264069 is 960462161.

161264069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140896900 + 20367169 = 11870^2 + 4513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161264069 is a prime.

It is a super-2 number, since 2×161264069² = 52012199900873522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161264009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80632034 + 80632035.

It is an arithmetic number, because the mean of its divisors is an integer number (80632035).

Almost surely, 2^161264069 is an apocalyptic number.

It is an amenable number.

161264069 is a deficient number, since it is larger than the sum of its proper divisors (1).

161264069 is an equidigital number, since it uses as much as digits as its factorization.

161264069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 161264069 is about 12698.9790534515. The cubic root of 161264069 is about 544.3094460685.

The spelling of 161264069 in words is "one hundred sixty-one million, two hundred sixty-four thousand, sixty-nine".