2165048890 has 16 divisors (see below), whose sum is σ = 3980005632. Its totient is φ = 847593424.

The previous prime is 2165048881. The next prime is 2165048909. The reversal of 2165048890 is 988405612.

It is a happy 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, 2302774 + ... + 2303713.

It is an arithmetic number, because the mean of its divisors is an integer number (248750352).

Almost surely, 2^2165048890 is an apocalyptic number.

2165048890 is a deficient number, since it is larger than the sum of its proper divisors (1814956742).

2165048890 is a wasteful number, since it uses less digits than its factorization.

2165048890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606541.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 2165048890 is about 46530.0858585066. The cubic root of 2165048890 is about 1293.6672065698.

The spelling of 2165048890 in words is "two billion, one hundred sixty-five million, forty-eight thousand, eight hundred ninety".