161466265 has 8 divisors (see below), whose sum is σ = 195474888. Its totient is φ = 128029440.

The previous prime is 161466251. The next prime is 161466269. The reversal of 161466265 is 562664161.

It can be written as a sum of positive squares in 4 ways, for example, as 18113536 + 143352729 = 4256^2 + 11973^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161466265 - 2¹⁵ = 161433497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161466269) 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 7 ways as a sum of consecutive naturals, for example, 142326 + ... + 143455.

It is an arithmetic number, because the mean of its divisors is an integer number (24434361).

Almost surely, 2^161466265 is an apocalyptic number.

It is an amenable number.

161466265 is a deficient number, since it is larger than the sum of its proper divisors (34008623).

161466265 is a wasteful number, since it uses less digits than its factorization.

161466265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285899.

The product of its digits is 51840, while the sum is 37.

The square root of 161466265 is about 12706.9376719963. The cubic root of 161466265 is about 544.5368396186.

The spelling of 161466265 in words is "one hundred sixty-one million, four hundred sixty-six thousand, two hundred sixty-five".