2165460421 has 8 divisors (see below), whose sum is σ = 2278101600. Its totient is φ = 2055350640.

The previous prime is 2165460413. The next prime is 2165460439. The reversal of 2165460421 is 1240645612.

It is a happy number.

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

It is not a de Polignac number, because 2165460421 - 2³ = 2165460413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165460721) 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, 631095 + ... + 634516.

It is an arithmetic number, because the mean of its divisors is an integer number (284762700).

Almost surely, 2^2165460421 is an apocalyptic number.

It is an amenable number.

2165460421 is a deficient number, since it is larger than the sum of its proper divisors (112641179).

2165460421 is a wasteful number, since it uses less digits than its factorization.

2165460421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265699.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2165460421 is about 46534.5078517008. The cubic root of 2165460421 is about 1293.7491678338.

The spelling of 2165460421 in words is "two billion, one hundred sixty-five million, four hundred sixty thousand, four hundred twenty-one".