160999999 has 2 divisors, whose sum is σ = 161000000. Its totient is φ = 160999998.

The previous prime is 160999991. The next prime is 161000009. The reversal of 160999999 is 999999061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160999999 - 2³ = 160999991 is a prime.

160999999 is a modest number, since divided by 99999 gives 1609 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80499999 + 80500000.

It is an arithmetic number, because the mean of its divisors is an integer number (80500000).

Almost surely, 2^160999999 is an apocalyptic number.

160999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

160999999 is an equidigital number, since it uses as much as digits as its factorization.

160999999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3188646, while the sum is 61.

The square root of 160999999 is about 12688.5775010440. The cubic root of 160999999 is about 544.0121814152.

The spelling of 160999999 in words is "one hundred sixty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".