2101649161 has 8 divisors (see below), whose sum is σ = 2108150784. Its totient is φ = 2095158480.

The previous prime is 2101649141. The next prime is 2101649171. The reversal of 2101649161 is 1619461012.

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 2101649161 - 2²⁹ = 1564778249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101649141) 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, 527800 + ... + 531766.

It is an arithmetic number, because the mean of its divisors is an integer number (263518848).

Almost surely, 2^2101649161 is an apocalyptic number.

It is an amenable number.

2101649161 is a deficient number, since it is larger than the sum of its proper divisors (6501623).

2101649161 is an equidigital number, since it uses as much as digits as its factorization.

2101649161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2101649161 is about 45843.7472399454. The cubic root of 2101649161 is about 1280.9142965156.

The spelling of 2101649161 in words is "two billion, one hundred one million, six hundred forty-nine thousand, one hundred sixty-one".