2154800544 has 48 divisors (see below), whose sum is σ = 6091458912. Its totient is φ = 663015168.

The previous prime is 2154800533. The next prime is 2154800567. The reversal of 2154800544 is 4450084512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862054 + ... + 864549.

It is an arithmetic number, because the mean of its divisors is an integer number (126905394).

Almost surely, 2^2154800544 is an apocalyptic number.

2154800544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2154800544 is an abundant number, since it is smaller than the sum of its proper divisors (3936658368).

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

2154800544 is a wasteful number, since it uses less digits than its factorization.

2154800544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726629 (or 1726621 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 2154800544 is about 46419.8292112326. The cubic root of 2154800544 is about 1291.6227687743.

The spelling of 2154800544 in words is "two billion, one hundred fifty-four million, eight hundred thousand, five hundred forty-four".