160421791 has 2 divisors, whose sum is σ = 160421792. Its totient is φ = 160421790.

The previous prime is 160421771. The next prime is 160421797. The reversal of 160421791 is 197124061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 160421791 - 2⁵ = 160421759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160421797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80210895 + 80210896.

It is an arithmetic number, because the mean of its divisors is an integer number (80210896).

Almost surely, 2^160421791 is an apocalyptic number.

160421791 is a deficient number, since it is larger than the sum of its proper divisors (1).

160421791 is an equidigital number, since it uses as much as digits as its factorization.

160421791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 160421791 is about 12665.7724201882. The cubic root of 160421791 is about 543.3601534513.

The spelling of 160421791 in words is "one hundred sixty million, four hundred twenty-one thousand, seven hundred ninety-one".