161460709 has 2 divisors, whose sum is σ = 161460710. Its totient is φ = 161460708.

The previous prime is 161460703. The next prime is 161460731. The reversal of 161460709 is 907064161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133402500 + 28058209 = 11550^2 + 5297^2 .

It is a cyclic number.

It is not a de Polignac number, because 161460709 - 2³ = 161460701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161460701) 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, 80730354 + 80730355.

It is an arithmetic number, because the mean of its divisors is an integer number (80730355).

Almost surely, 2^161460709 is an apocalyptic number.

It is an amenable number.

161460709 is a deficient number, since it is larger than the sum of its proper divisors (1).

161460709 is an equidigital number, since it uses as much as digits as its factorization.

161460709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 161460709 is about 12706.7190493849. The cubic root of 161460709 is about 544.5305937704.

The spelling of 161460709 in words is "one hundred sixty-one million, four hundred sixty thousand, seven hundred nine".