2165441700 has 36 divisors (see below), whose sum is σ = 6265345520. Its totient is φ = 577451040.

The previous prime is 2165441699. The next prime is 2165441731. The reversal of 2165441700 is 71445612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3608770 + ... + 3609369.

Almost surely, 2^2165441700 is an apocalyptic number.

2165441700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2165441700 is an abundant number, since it is smaller than the sum of its proper divisors (4099903820).

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

2165441700 is a wasteful number, since it uses less digits than its factorization.

2165441700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218156 (or 7218149 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2165441700 is about 46534.3066994664. The cubic root of 2165441700 is about 1293.7454395508.

The spelling of 2165441700 in words is "two billion, one hundred sixty-five million, four hundred forty-one thousand, seven hundred".