2153442004 has 36 divisors (see below), whose sum is σ = 4402079220. Its totient is φ = 919054080.

The previous prime is 2153441963. The next prime is 2153442013. The reversal of 2153442004 is 4002443512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1041352900 + 1112089104 = 32270^2 + 33348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2153442004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24442 + ... + 70030.

Almost surely, 2^2153442004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2153442004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201039610).

2153442004 is an abundant number, since it is smaller than the sum of its proper divisors (2248637216).

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

2153442004 is a wasteful number, since it uses less digits than its factorization.

2153442004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45848 (or 45839 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2153442004 is about 46405.1937179450. The cubic root of 2153442004 is about 1291.3512679932.

Adding to 2153442004 its reverse (4002443512), we get a palindrome (6155885516).

The spelling of 2153442004 in words is "two billion, one hundred fifty-three million, four hundred forty-two thousand, four".