2143404155 has 16 divisors (see below), whose sum is σ = 2825176320. Its totient is φ = 1553843808.

The previous prime is 2143404103. The next prime is 2143404163. The reversal of 2143404155 is 5514043412.

It is a cyclic number.

It is not a de Polignac number, because 2143404155 - 2¹⁸ = 2143142011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488297 + ... + 492666.

It is an arithmetic number, because the mean of its divisors is an integer number (176573520).

Almost surely, 2^2143404155 is an apocalyptic number.

2143404155 is a deficient number, since it is larger than the sum of its proper divisors (681772165).

2143404155 is a wasteful number, since it uses less digits than its factorization.

2143404155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981010.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2143404155 is about 46296.9130180404. The cubic root of 2143404155 is about 1289.3416818087.

Adding to 2143404155 its reverse (5514043412), we get a palindrome (7657447567).

The spelling of 2143404155 in words is "two billion, one hundred forty-three million, four hundred four thousand, one hundred fifty-five".