2170000091 has 16 divisors (see below), whose sum is σ = 2500243200. Its totient is φ = 1844855520.

The previous prime is 2170000073. The next prime is 2170000097. The reversal of 2170000091 is 1900000712.

2170000091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2170000091 - 2¹⁰ = 2169999067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2170000097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136960 + ... + 1138866.

It is an arithmetic number, because the mean of its divisors is an integer number (156265200).

Almost surely, 2^2170000091 is an apocalyptic number.

2170000091 is a deficient number, since it is larger than the sum of its proper divisors (330243109).

2170000091 is a wasteful number, since it uses less digits than its factorization.

2170000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 2170000091 is about 46583.2597721542. The cubic root of 2170000091 is about 1294.6526084777.

The spelling of 2170000091 in words is "two billion, one hundred seventy million, ninety-one", and thus it is an aban number.