2101165646 has 8 divisors (see below), whose sum is σ = 3157289280. Its totient is φ = 1048735888.

The previous prime is 2101165603. The next prime is 2101165669. The reversal of 2101165646 is 6465611012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922046 + ... + 924321.

It is an arithmetic number, because the mean of its divisors is an integer number (394661160).

Almost surely, 2^2101165646 is an apocalyptic number.

2101165646 is a deficient number, since it is larger than the sum of its proper divisors (1056123634).

2101165646 is a wasteful number, since it uses less digits than its factorization.

2101165646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846938.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2101165646 is about 45838.4734257152. The cubic root of 2101165646 is about 1280.8160579846.

Adding to 2101165646 its reverse (6465611012), we get a palindrome (8566776658).

The spelling of 2101165646 in words is "two billion, one hundred one million, one hundred sixty-five thousand, six hundred forty-six".