2185150506 has 128 divisors (see below), whose sum is σ = 5655232512. Its totient is φ = 546264000.

The previous prime is 2185150483. The next prime is 2185150519. The reversal of 2185150506 is 6050515812.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3880981 + ... + 3881543.

It is an arithmetic number, because the mean of its divisors is an integer number (44181504).

Almost surely, 2^2185150506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2185150506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827616256).

2185150506 is an abundant number, since it is smaller than the sum of its proper divisors (3470082006).

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

2185150506 is a wasteful number, since it uses less digits than its factorization.

2185150506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 2185150506 is about 46745.5934393821. The cubic root of 2185150506 is about 1297.6586072124.

The spelling of 2185150506 in words is "two billion, one hundred eighty-five million, one hundred fifty thousand, five hundred six".