2155805092 has 48 divisors (see below), whose sum is σ = 4479148800. Its totient is φ = 888652800.

The previous prime is 2155805083. The next prime is 2155805101. The reversal of 2155805092 is 2905085512.

2155805092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2155805083) and next prime (2155805101).

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, 68284 + ... + 94732.

It is an arithmetic number, because the mean of its divisors is an integer number (93315600).

Almost surely, 2^2155805092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155805092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239574400).

2155805092 is an abundant number, since it is smaller than the sum of its proper divisors (2323343708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155805092 is a wasteful number, since it uses less digits than its factorization.

2155805092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26572 (or 26570 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 2155805092 is about 46430.6481970691. The cubic root of 2155805092 is about 1291.8234517714.

The spelling of 2155805092 in words is "two billion, one hundred fifty-five million, eight hundred five thousand, ninety-two".