2160101861 has 4 divisors (see below), whose sum is σ = 2210336832. Its totient is φ = 2109866892.

The previous prime is 2160101843. The next prime is 2160101863. The reversal of 2160101861 is 1681010612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2160101861 - 2²² = 2155907557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2160101861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160101863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25117421 + ... + 25117506.

It is an arithmetic number, because the mean of its divisors is an integer number (552584208).

Almost surely, 2^2160101861 is an apocalyptic number.

It is an amenable number.

2160101861 is a deficient number, since it is larger than the sum of its proper divisors (50234971).

2160101861 is an equidigital number, since it uses as much as digits as its factorization.

2160101861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50234970.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 2160101861 is about 46476.8959914493. The cubic root of 2160101861 is about 1292.6811334101.

The spelling of 2160101861 in words is "two billion, one hundred sixty million, one hundred one thousand, eight hundred sixty-one".