160689091 has 2 divisors, whose sum is σ = 160689092. Its totient is φ = 160689090.

The previous prime is 160689073. The next prime is 160689097. The reversal of 160689091 is 190986061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 160689091 - 2¹⁵ = 160656323 is a prime.

It is a Chen prime.

160689091 is a strobogrammatic number because it is the same when read upside-down.

It is not a weakly prime, because it can be changed into another prime (160689097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80344545 + 80344546.

It is an arithmetic number, because the mean of its divisors is an integer number (80344546).

Almost surely, 2^160689091 is an apocalyptic number.

160689091 is a deficient number, since it is larger than the sum of its proper divisors (1).

160689091 is an equidigital number, since it uses as much as digits as its factorization.

160689091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 160689091 is about 12676.3200890479. The cubic root of 160689091 is about 543.6617741034.

The spelling of 160689091 in words is "one hundred sixty million, six hundred eighty-nine thousand, ninety-one".