2215564146 has 12 divisors (see below), whose sum is σ = 4800389022. Its totient is φ = 738521376.

The previous prime is 2215564139. The next prime is 2215564157. The reversal of 2215564146 is 6414655122.

2215564146 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 5 + 641 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1888858521 + 326705625 = 43461^2 + 18075^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2215564146.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61543431 + ... + 61543466.

Almost surely, 2^2215564146 is an apocalyptic number.

2215564146 is an abundant number, since it is smaller than the sum of its proper divisors (2584824876).

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

2215564146 is a wasteful number, since it uses less digits than its factorization.

2215564146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123086905 (or 123086902 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2215564146 is about 47069.7795405927. The cubic root of 2215564146 is about 1303.6513022660.

The spelling of 2215564146 in words is "two billion, two hundred fifteen million, five hundred sixty-four thousand, one hundred forty-six".