160415921 has 2 divisors, whose sum is σ = 160415922. Its totient is φ = 160415920.

The previous prime is 160415911. The next prime is 160415923. The reversal of 160415921 is 129514061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135024400 + 25391521 = 11620^2 + 5039^2 .

It is a cyclic number.

It is not a de Polignac number, because 160415921 - 2¹⁴ = 160399537 is a prime.

Together with 160415923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (160415923) 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 as a sum of consecutive naturals, namely, 80207960 + 80207961.

It is an arithmetic number, because the mean of its divisors is an integer number (80207961).

Almost surely, 2^160415921 is an apocalyptic number.

It is an amenable number.

160415921 is a deficient number, since it is larger than the sum of its proper divisors (1).

160415921 is an equidigital number, since it uses as much as digits as its factorization.

160415921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 160415921 is about 12665.5406911825. The cubic root of 160415921 is about 543.3535259996.

Adding to 160415921 its reverse (129514061), we get a palindrome (289929982).

The spelling of 160415921 in words is "one hundred sixty million, four hundred fifteen thousand, nine hundred twenty-one".