2154513432 has 16 divisors (see below), whose sum is σ = 5386283640. Its totient is φ = 718171136.

The previous prime is 2154513421. The next prime is 2154513433. The reversal of 2154513432 is 2343154512.

It is a self number, because there is not a number n which added to its sum of digits gives 2154513432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154513433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44885673 + ... + 44885720.

Almost surely, 2^2154513432 is an apocalyptic number.

It is an amenable number.

2154513432 is an abundant number, since it is smaller than the sum of its proper divisors (3231770208).

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

2154513432 is a wasteful number, since it uses less digits than its factorization.

2154513432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89771402 (or 89771398 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 2154513432 is about 46416.7365505159. The cubic root of 2154513432 is about 1291.5653996798.

Adding to 2154513432 its reverse (2343154512), we get a palindrome (4497667944).

The spelling of 2154513432 in words is "two billion, one hundred fifty-four million, five hundred thirteen thousand, four hundred thirty-two".