4195121623 has 24 divisors (see below), whose sum is σ = 5349055104. Its totient is φ = 3253345200.

The previous prime is 4195121617. The next prime is 4195121627. The reversal of 4195121623 is 3261215914.

It is not a de Polignac number, because 4195121623 - 2⁵ = 4195121591 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 (4195121627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95286 + ... + 132172.

It is an arithmetic number, because the mean of its divisors is an integer number (222877296).

Almost surely, 2^4195121623 is an apocalyptic number.

4195121623 is a deficient number, since it is larger than the sum of its proper divisors (1153933481).

4195121623 is a wasteful number, since it uses less digits than its factorization.

4195121623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37123 (or 37116 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 4195121623 is about 64769.7585528926. The cubic root of 4195121623 is about 1612.8037283603.

The spelling of 4195121623 in words is "four billion, one hundred ninety-five million, one hundred twenty-one thousand, six hundred twenty-three".