2201187138 has 32 divisors (see below), whose sum is σ = 4423372800. Its totient is φ = 730238976.

The previous prime is 2201187137. The next prime is 2201187167. The reversal of 2201187138 is 8317811022.

It is a junction number, because it is equal to n+sod(n) for n = 2201187099 and 2201187108.

It is not an unprimeable number, because it can be changed into a prime (2201187137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720383 + ... + 1721661.

It is an arithmetic number, because the mean of its divisors is an integer number (138230400).

Almost surely, 2^2201187138 is an apocalyptic number.

2201187138 is an abundant number, since it is smaller than the sum of its proper divisors (2222185662).

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

2201187138 is a wasteful number, since it uses less digits than its factorization.

2201187138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 2201187138 is about 46916.8108251190. The cubic root of 2201187138 is about 1300.8253413813.

The spelling of 2201187138 in words is "two billion, two hundred one million, one hundred eighty-seven thousand, one hundred thirty-eight".