2153444623 has 12 divisors (see below), whose sum is σ = 2393616960. Its totient is φ = 1935670880.

The previous prime is 2153444603. The next prime is 2153444633. The reversal of 2153444623 is 3264443512.

It is a de Polignac number, because none of the positive numbers 2^k-2153444623 is a prime.

It is a super-2 number, since 2×2153444623² = 9274647488655224258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153444603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89215 + ... + 110752.

It is an arithmetic number, because the mean of its divisors is an integer number (199468080).

Almost surely, 2^2153444623 is an apocalyptic number.

2153444623 is a deficient number, since it is larger than the sum of its proper divisors (240172337).

2153444623 is a wasteful number, since it uses less digits than its factorization.

2153444623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200078 (or 200067 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 2153444623 is about 46405.2219367605. The cubic root of 2153444623 is about 1291.3517915035.

The spelling of 2153444623 in words is "two billion, one hundred fifty-three million, four hundred forty-four thousand, six hundred twenty-three".