2155146588 has 144 divisors (see below), whose sum is σ = 6546525440. Its totient is φ = 607181184.

The previous prime is 2155146577. The next prime is 2155146613. The reversal of 2155146588 is 8856415512.

2155146588 is a `hidden beast` number, since 2 + 1 + 55 + 14 + 6 + 588 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 494523 + ... + 498861.

Almost surely, 2^2155146588 is an apocalyptic number.

2155146588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155146588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3273262720).

2155146588 is an abundant number, since it is smaller than the sum of its proper divisors (4391378852).

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

2155146588 is a wasteful number, since it uses less digits than its factorization.

2155146588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438 (or 4424 counting only the distinct ones).

The product of its digits is 384000, while the sum is 45.

The square root of 2155146588 is about 46423.5563911254. The cubic root of 2155146588 is about 1291.6919065555.

The spelling of 2155146588 in words is "two billion, one hundred fifty-five million, one hundred forty-six thousand, five hundred eighty-eight".