6649165290 has 64 divisors (see below), whose sum is σ = 17353419264. Its totient is φ = 1623702528.

The previous prime is 6649165277. The next prime is 6649165331. The reversal of 6649165290 is 925619466.

It is a super-2 number, since 2×6649165290² = 88422798107481568200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157314 + ... + 195053.

It is an arithmetic number, because the mean of its divisors is an integer number (271147176).

Almost surely, 2^6649165290 is an apocalyptic number.

6649165290 is an abundant number, since it is smaller than the sum of its proper divisors (10704253974).

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

6649165290 is a wasteful number, since it uses less digits than its factorization.

6649165290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352431.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 6649165290 is about 81542.4140555086. The cubic root of 6649165290 is about 1880.4236718685.

The spelling of 6649165290 in words is "six billion, six hundred forty-nine million, one hundred sixty-five thousand, two hundred ninety".