2164154226 has 128 divisors (see below), whose sum is σ = 5163540480. Its totient is φ = 598295808.

The previous prime is 2164154221. The next prime is 2164154233. The reversal of 2164154226 is 6224514612.

It is not an unprimeable number, because it can be changed into a prime (2164154221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5896695 + ... + 5897061.

It is an arithmetic number, because the mean of its divisors is an integer number (40340160).

Almost surely, 2^2164154226 is an apocalyptic number.

2164154226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2164154226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2581770240).

2164154226 is an abundant number, since it is smaller than the sum of its proper divisors (2999386254).

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

2164154226 is a wasteful number, since it uses less digits than its factorization.

2164154226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600.

The product of its digits is 23040, while the sum is 33.

The square root of 2164154226 is about 46520.4710423272. The cubic root of 2164154226 is about 1293.4889878171.

Adding to 2164154226 its reverse (6224514612), we get a palindrome (8388668838).

The spelling of 2164154226 in words is "two billion, one hundred sixty-four million, one hundred fifty-four thousand, two hundred twenty-six".