2154567822 has 16 divisors (see below), whose sum is σ = 4700875392. Its totient is φ = 652899320.

The previous prime is 2154567809. The next prime is 2154567823. The reversal of 2154567822 is 2287654512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154567823) 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 7 ways as a sum of consecutive naturals, for example, 16322418 + ... + 16322549.

It is an arithmetic number, because the mean of its divisors is an integer number (293804712).

Almost surely, 2^2154567822 is an apocalyptic number.

2154567822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2154567822 is an abundant number, since it is smaller than the sum of its proper divisors (2546307570).

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

2154567822 is a wasteful number, since it uses less digits than its factorization.

2154567822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32644983.

The product of its digits is 268800, while the sum is 42.

The square root of 2154567822 is about 46417.3224346256. The cubic root of 2154567822 is about 1291.5762679730.

The spelling of 2154567822 in words is "two billion, one hundred fifty-four million, five hundred sixty-seven thousand, eight hundred twenty-two".