2154045040 has 40 divisors (see below), whose sum is σ = 5723606880. Its totient is φ = 738529536.

The previous prime is 2154045037. The next prime is 2154045071. The reversal of 2154045040 is 405404512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2154044996 and 2154045014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1922695 + ... + 1923814.

It is an arithmetic number, because the mean of its divisors is an integer number (143090172).

Almost surely, 2^2154045040 is an apocalyptic number.

2154045040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154045040 is an abundant number, since it is smaller than the sum of its proper divisors (3569561840).

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

2154045040 is a wasteful number, since it uses less digits than its factorization.

2154045040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846529 (or 3846523 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2154045040 is about 46411.6907685984. The cubic root of 2154045040 is about 1291.4717973012.

Adding to 2154045040 its reverse (405404512), we get a palindrome (2559449552).

The spelling of 2154045040 in words is "two billion, one hundred fifty-four million, forty-five thousand, forty".