2154431422 has 16 divisors (see below), whose sum is σ = 3796620912. Its totient is φ = 903957120.

The previous prime is 2154431417. The next prime is 2154431497. The reversal of 2154431422 is 2241344512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3766203 + ... + 3766774.

It is an arithmetic number, because the mean of its divisors is an integer number (237288807).

Almost surely, 2^2154431422 is an apocalyptic number.

2154431422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2154431422 is a deficient number, since it is larger than the sum of its proper divisors (1642189490).

2154431422 is a wasteful number, since it uses less digits than its factorization.

2154431422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533003.

The product of its digits is 7680, while the sum is 28.

The square root of 2154431422 is about 46415.8531323081. The cubic root of 2154431422 is about 1291.5490119700.

Adding to 2154431422 its reverse (2241344512), we get a palindrome (4395775934).

The spelling of 2154431422 in words is "two billion, one hundred fifty-four million, four hundred thirty-one thousand, four hundred twenty-two".