2165363420 has 24 divisors (see below), whose sum is σ = 4960651248. Its totient is φ = 787404800.

The previous prime is 2165363413. The next prime is 2165363429. The reversal of 2165363420 is 243635612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165363429) 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, 4921061 + ... + 4921500.

It is an arithmetic number, because the mean of its divisors is an integer number (206693802).

Almost surely, 2^2165363420 is an apocalyptic number.

2165363420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2165363420 is an abundant number, since it is smaller than the sum of its proper divisors (2795287828).

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

2165363420 is a wasteful number, since it uses less digits than its factorization.

2165363420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9842581 (or 9842579 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2165363420 is about 46533.4655919801. The cubic root of 2165363420 is about 1293.7298498733.

The spelling of 2165363420 in words is "two billion, one hundred sixty-five million, three hundred sixty-three thousand, four hundred twenty".