2165460420 has 24 divisors (see below), whose sum is σ = 6063289344. Its totient is φ = 577456096.

The previous prime is 2165460413. The next prime is 2165460439. The reversal of 2165460420 is 240645612.

It is a super-3 number, since 3×2165460420³ (a number of 29 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18045444 + ... + 18045563.

It is an arithmetic number, because the mean of its divisors is an integer number (252637056).

Almost surely, 2^2165460420 is an apocalyptic number.

2165460420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2165460420 is an abundant number, since it is smaller than the sum of its proper divisors (3897828924).

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

2165460420 is a wasteful number, since it uses less digits than its factorization.

2165460420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36091019 (or 36091017 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2165460420 is about 46534.5078409560. The cubic root of 2165460420 is about 1293.7491676346.

The spelling of 2165460420 in words is "two billion, one hundred sixty-five million, four hundred sixty thousand, four hundred twenty".