2143554118 has 4 divisors (see below), whose sum is σ = 3215331180. Its totient is φ = 1071777058.

The previous prime is 2143554107. The next prime is 2143554121. The reversal of 2143554118 is 8114553412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535888528 + ... + 535888531.

It is an arithmetic number, because the mean of its divisors is an integer number (803832795).

Almost surely, 2^2143554118 is an apocalyptic number.

2143554118 is a deficient number, since it is larger than the sum of its proper divisors (1071777062).

2143554118 is a wasteful number, since it uses less digits than its factorization.

2143554118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071777061.

The product of its digits is 19200, while the sum is 34.

The square root of 2143554118 is about 46298.5325685383. The cubic root of 2143554118 is about 1289.3717506499.

The spelling of 2143554118 in words is "two billion, one hundred forty-three million, five hundred fifty-four thousand, one hundred eighteen".