2086742166 has 16 divisors (see below), whose sum is σ = 4175742144. Its totient is φ = 695204424.

The previous prime is 2086742123. The next prime is 2086742173. The reversal of 2086742166 is 6612476802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81940 + ... + 104343.

It is an arithmetic number, because the mean of its divisors is an integer number (260983884).

Almost surely, 2^2086742166 is an apocalyptic number.

2086742166 is an abundant number, since it is smaller than the sum of its proper divisors (2088999978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2086742166 is a wasteful number, since it uses less digits than its factorization.

2086742166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188155.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 2086742166 is about 45680.8730871029. The cubic root of 2086742166 is about 1277.8785999039.

The spelling of 2086742166 in words is "two billion, eighty-six million, seven hundred forty-two thousand, one hundred sixty-six".