2144001155 has 16 divisors (see below), whose sum is σ = 2731605120. Its totient is φ = 1609884672.

The previous prime is 2144001049. The next prime is 2144001161. The reversal of 2144001155 is 5511004412.

It is a cyclic number.

It is not a de Polignac number, because 2144001155 - 2⁸ = 2144000899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2144001155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3170 + ... + 65559.

It is an arithmetic number, because the mean of its divisors is an integer number (170725320).

Almost surely, 2^2144001155 is an apocalyptic number.

2144001155 is a deficient number, since it is larger than the sum of its proper divisors (587603965).

2144001155 is a wasteful number, since it uses less digits than its factorization.

2144001155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69118.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2144001155 is about 46303.3600832596. The cubic root of 2144001155 is about 1289.4613770030.

Adding to 2144001155 its reverse (5511004412), we get a palindrome (7655005567).

The spelling of 2144001155 in words is "two billion, one hundred forty-four million, one thousand, one hundred fifty-five".