161296461 has 8 divisors (see below), whose sum is σ = 238957760. Its totient is φ = 107530956.

The previous prime is 161296427. The next prime is 161296519. The reversal of 161296461 is 164692161.

161296461 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 9 + 646 + 1 = 666.

It is not a de Polignac number, because 161296461 - 2¹⁰ = 161295437 is a prime.

It is a super-2 number, since 2×161296461² = 52033096662249042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161256461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2986945 + ... + 2986998.

It is an arithmetic number, because the mean of its divisors is an integer number (29869720).

Almost surely, 2^161296461 is an apocalyptic number.

It is an amenable number.

161296461 is a deficient number, since it is larger than the sum of its proper divisors (77661299).

161296461 is an equidigital number, since it uses as much as digits as its factorization.

161296461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973952 (or 5973946 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 161296461 is about 12700.2543675314. The cubic root of 161296461 is about 544.3458875220.

The spelling of 161296461 in words is "one hundred sixty-one million, two hundred ninety-six thousand, four hundred sixty-one".