2161458423 has 12 divisors (see below), whose sum is σ = 3133381368. Its totient is φ = 1435768560.

The previous prime is 2161458413. The next prime is 2161458427. The reversal of 2161458423 is 3248541612.

It is a happy number.

2161458423 is a `hidden beast` number, since 2 + 161 + 458 + 42 + 3 = 666.

It is not a de Polignac number, because 2161458423 - 2²⁰ = 2160409847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161458427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431013 + ... + 435998.

It is an arithmetic number, because the mean of its divisors is an integer number (261115114).

Almost surely, 2^2161458423 is an apocalyptic number.

2161458423 is a deficient number, since it is larger than the sum of its proper divisors (971922945).

2161458423 is a wasteful number, since it uses less digits than its factorization.

2161458423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867294 (or 867291 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 2161458423 is about 46491.4876402122. The cubic root of 2161458423 is about 1292.9516816299.

The spelling of 2161458423 in words is "two billion, one hundred sixty-one million, four hundred fifty-eight thousand, four hundred twenty-three".