2165713854 has 16 divisors (see below), whose sum is σ = 4383614592. Its totient is φ = 713206808.

The previous prime is 2165713853. The next prime is 2165713867. The reversal of 2165713854 is 4583175612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165713853) 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, 2173914 + ... + 2174909.

It is an arithmetic number, because the mean of its divisors is an integer number (273975912).

Almost surely, 2^2165713854 is an apocalyptic number.

2165713854 is an abundant number, since it is smaller than the sum of its proper divisors (2217900738).

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

2165713854 is a wasteful number, since it uses less digits than its factorization.

2165713854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348911.

The product of its digits is 201600, while the sum is 42.

The square root of 2165713854 is about 46537.2308372555. The cubic root of 2165713854 is about 1293.7996368456.

It can be divided in two parts, 21657 and 13854, that added together give a triangular number (35511 = T₂₆₆).

The spelling of 2165713854 in words is "two billion, one hundred sixty-five million, seven hundred thirteen thousand, eight hundred fifty-four".