2153623144 has 8 divisors (see below), whose sum is σ = 4038043410. Its totient is φ = 1076811568.

The previous prime is 2153623141. The next prime is 2153623159. The reversal of 2153623144 is 4413263512.

It can be written as a sum of positive squares in only one way, i.e., 1184048100 + 969575044 = 34410^2 + 31138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2153623141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134601439 + ... + 134601454.

Almost surely, 2^2153623144 is an apocalyptic number.

It is an amenable number.

2153623144 is a deficient number, since it is larger than the sum of its proper divisors (1884420266).

2153623144 is a wasteful number, since it uses less digits than its factorization.

2153623144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269202899 (or 269202895 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 2153623144 is about 46407.1453980958. The cubic root of 2153623144 is about 1291.3874749601.

Adding to 2153623144 its reverse (4413263512), we get a palindrome (6566886656).

The spelling of 2153623144 in words is "two billion, one hundred fifty-three million, six hundred twenty-three thousand, one hundred forty-four".