2155144234 has 8 divisors (see below), whose sum is σ = 3233010528. Its totient is φ = 1077474060.

The previous prime is 2155144207. The next prime is 2155144259. The reversal of 2155144234 is 4324415512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2155144196 and 2155144205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17502 + ... + 67945.

It is an arithmetic number, because the mean of its divisors is an integer number (404126316).

Almost surely, 2^2155144234 is an apocalyptic number.

2155144234 is a deficient number, since it is larger than the sum of its proper divisors (1077866294).

2155144234 is a wasteful number, since it uses less digits than its factorization.

2155144234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98060.

The product of its digits is 19200, while the sum is 31.

The square root of 2155144234 is about 46423.5310376107. The cubic root of 2155144234 is about 1291.6914362636.

Adding to 2155144234 its reverse (4324415512), we get a palindrome (6479559746).

The spelling of 2155144234 in words is "two billion, one hundred fifty-five million, one hundred forty-four thousand, two hundred thirty-four".