2165126354 has 16 divisors (see below), whose sum is σ = 3279376800. Its totient is φ = 1072039584.

The previous prime is 2165126351. The next prime is 2165126357. The reversal of 2165126354 is 4536215612.

It is an interprime number because it is at equal distance from previous prime (2165126351) and next prime (2165126357).

It is not an unprimeable number, because it can be changed into a prime (2165126351) 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, 105377 + ... + 124235.

It is an arithmetic number, because the mean of its divisors is an integer number (204961050).

Almost surely, 2^2165126354 is an apocalyptic number.

2165126354 is a deficient number, since it is larger than the sum of its proper divisors (1114250446).

2165126354 is a wasteful number, since it uses less digits than its factorization.

2165126354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19417.

The product of its digits is 43200, while the sum is 35.

The square root of 2165126354 is about 46530.9182587234. The cubic root of 2165126354 is about 1293.6826352347.

The spelling of 2165126354 in words is "two billion, one hundred sixty-five million, one hundred twenty-six thousand, three hundred fifty-four".