160091891 has 8 divisors (see below), whose sum is σ = 175845120. Its totient is φ = 145071432.

The previous prime is 160091887. The next prime is 160091903. The reversal of 160091891 is 198190061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 160091891 - 2² = 160091887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160091851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182735 + ... + 183608.

It is an arithmetic number, because the mean of its divisors is an integer number (21980640).

Almost surely, 2^160091891 is an apocalyptic number.

160091891 is a deficient number, since it is larger than the sum of its proper divisors (15753229).

160091891 is a wasteful number, since it uses less digits than its factorization.

160091891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366385.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 160091891 is about 12652.7424300031. The cubic root of 160091891 is about 542.9874328246.

The spelling of 160091891 in words is "one hundred sixty million, ninety-one thousand, eight hundred ninety-one".