2215387838 has 16 divisors (see below), whose sum is σ = 3350765040. Its totient is φ = 1098484416.

The previous prime is 2215387819. The next prime is 2215387847. The reversal of 2215387838 is 8387835122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2215387792 and 2215387801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273170 + ... + 281162.

It is an arithmetic number, because the mean of its divisors is an integer number (209422815).

Almost surely, 2^2215387838 is an apocalyptic number.

2215387838 is a deficient number, since it is larger than the sum of its proper divisors (1135377202).

2215387838 is a wasteful number, since it uses less digits than its factorization.

2215387838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9131.

The product of its digits is 645120, while the sum is 47.

The square root of 2215387838 is about 47067.9066668574. The cubic root of 2215387838 is about 1303.6167211186.

The spelling of 2215387838 in words is "two billion, two hundred fifteen million, three hundred eighty-seven thousand, eight hundred thirty-eight".