2155872284 has 6 divisors (see below), whose sum is σ = 3772776504. Its totient is φ = 1077936140.

The previous prime is 2155872283. The next prime is 2155872319. The reversal of 2155872284 is 4822785512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155872283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269484032 + ... + 269484039.

It is an arithmetic number, because the mean of its divisors is an integer number (628796084).

Almost surely, 2^2155872284 is an apocalyptic number.

It is an amenable number.

2155872284 is a deficient number, since it is larger than the sum of its proper divisors (1616904220).

2155872284 is a wasteful number, since it uses less digits than its factorization.

2155872284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538968075 (or 538968073 counting only the distinct ones).

The product of its digits is 358400, while the sum is 44.

The square root of 2155872284 is about 46431.3717652193. The cubic root of 2155872284 is about 1291.8368727899.

The spelling of 2155872284 in words is "two billion, one hundred fifty-five million, eight hundred seventy-two thousand, two hundred eighty-four".