160722409 has 2 divisors, whose sum is σ = 160722410. Its totient is φ = 160722408.

The previous prime is 160722407. The next prime is 160722451. The reversal of 160722409 is 904227061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98942809 + 61779600 = 9947^2 + 7860^2 .

It is an emirp because it is prime and its reverse (904227061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160722409 - 2¹ = 160722407 is a prime.

Together with 160722407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (160722407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80361204 + 80361205.

It is an arithmetic number, because the mean of its divisors is an integer number (80361205).

Almost surely, 2^160722409 is an apocalyptic number.

It is an amenable number.

160722409 is a deficient number, since it is larger than the sum of its proper divisors (1).

160722409 is an equidigital number, since it uses as much as digits as its factorization.

160722409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 160722409 is about 12677.6342035886. The cubic root of 160722409 is about 543.6993466005.

It can be divided in two parts, 16072 and 2409, that added together give a palindrome (18481).

The spelling of 160722409 in words is "one hundred sixty million, seven hundred twenty-two thousand, four hundred nine".