2145036600 has 192 divisors, whose sum is σ = 8444102400. Its totient is φ = 490285440.

The previous prime is 2145036589. The next prime is 2145036601. The reversal of 2145036600 is 66305412.

2145036600 is a `hidden beast` number, since 2 + 1 + 4 + 50 + 3 + 6 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145036601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9427 + ... + 66173.

It is an arithmetic number, because the mean of its divisors is an integer number (43979700).

Almost surely, 2^2145036600 is an apocalyptic number.

2145036600 is a gapful number since it is divisible by the number (20) 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 2145036600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4222051200).

2145036600 is an abundant number, since it is smaller than the sum of its proper divisors (6299065800).

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

2145036600 is a wasteful number, since it uses less digits than its factorization.

2145036600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56779 (or 56764 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2145036600 is about 46314.5398336203. The cubic root of 2145036600 is about 1289.6689253138.

The spelling of 2145036600 in words is "two billion, one hundred forty-five million, thirty-six thousand, six hundred".