2145422154 has 16 divisors (see below), whose sum is σ = 4297991040. Its totient is φ = 713949600.

The previous prime is 2145422131. The next prime is 2145422261. The reversal of 2145422154 is 4512245412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293874 + ... + 301085.

It is an arithmetic number, because the mean of its divisors is an integer number (268624440).

Almost surely, 2^2145422154 is an apocalyptic number.

2145422154 is an abundant number, since it is smaller than the sum of its proper divisors (2152568886).

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

2145422154 is a wasteful number, since it uses less digits than its factorization.

2145422154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595565.

The product of its digits is 12800, while the sum is 30.

The square root of 2145422154 is about 46318.7019895852. The cubic root of 2145422154 is about 1289.7461900753.

Adding to 2145422154 its reverse (4512245412), we get a palindrome (6657667566).

The spelling of 2145422154 in words is "two billion, one hundred forty-five million, four hundred twenty-two thousand, one hundred fifty-four".