2154430544 has 20 divisors (see below), whose sum is σ = 4770525024. Its totient is φ = 923327328.

The previous prime is 2154430507. The next prime is 2154430559. The reversal of 2154430544 is 4450344512.

It is a self number, because there is not a number n which added to its sum of digits gives 2154430544.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9617882 + ... + 9618105.

Almost surely, 2^2154430544 is an apocalyptic number.

It is an amenable number.

2154430544 is an abundant number, since it is smaller than the sum of its proper divisors (2616094480).

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

2154430544 is a wasteful number, since it uses less digits than its factorization.

2154430544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19236002 (or 19235996 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 2154430544 is about 46415.8436743317. The cubic root of 2154430544 is about 1291.5488365207.

The spelling of 2154430544 in words is "two billion, one hundred fifty-four million, four hundred thirty thousand, five hundred forty-four".