160030991 has 2 divisors, whose sum is σ = 160030992. Its totient is φ = 160030990.

The previous prime is 160030973. The next prime is 160031017. The reversal of 160030991 is 199030061.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160030991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160036991) 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, 80015495 + 80015496.

It is an arithmetic number, because the mean of its divisors is an integer number (80015496).

Almost surely, 2^160030991 is an apocalyptic number.

160030991 is a deficient number, since it is larger than the sum of its proper divisors (1).

160030991 is an equidigital number, since it uses as much as digits as its factorization.

160030991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 160030991 is about 12650.3356081963. The cubic root of 160030991 is about 542.9185721047.

The spelling of 160030991 in words is "one hundred sixty million, thirty thousand, nine hundred ninety-one".