2165006530 has 16 divisors (see below), whose sum is σ = 4002337080. Its totient is φ = 842596992.

The previous prime is 2165006497. The next prime is 2165006531. The reversal of 2165006530 is 356005612.

It can be written as a sum of positive squares in 4 ways, for example, as 2143597401 + 21409129 = 46299^2 + 4627^2 .

It is not an unprimeable number, because it can be changed into a prime (2165006531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2925315 + ... + 2926054.

Almost surely, 2^2165006530 is an apocalyptic number.

2165006530 is a deficient number, since it is larger than the sum of its proper divisors (1837330550).

2165006530 is a wasteful number, since it uses less digits than its factorization.

2165006530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851413.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2165006530 is about 46529.6306669202. The cubic root of 2165006530 is about 1293.6587694854.

The spelling of 2165006530 in words is "two billion, one hundred sixty-five million, six thousand, five hundred thirty".