2154581822 has 16 divisors (see below), whose sum is σ = 3315332592. Its totient is φ = 1049596800.

The previous prime is 2154581813. The next prime is 2154581837. The reversal of 2154581822 is 2281854512.

It is a happy number.

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, 3248 + ... + 65724.

It is an arithmetic number, because the mean of its divisors is an integer number (207208287).

Almost surely, 2^2154581822 is an apocalyptic number.

2154581822 is a deficient number, since it is larger than the sum of its proper divisors (1160750770).

2154581822 is a wasteful number, since it uses less digits than its factorization.

2154581822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62923.

The product of its digits is 51200, while the sum is 38.

The square root of 2154581822 is about 46417.4732401496. The cubic root of 2154581822 is about 1291.5790654448.

The spelling of 2154581822 in words is "two billion, one hundred fifty-four million, five hundred eighty-one thousand, eight hundred twenty-two".