2154840670 has 16 divisors (see below), whose sum is σ = 3879268848. Its totient is φ = 861812800.

The previous prime is 2154840647. The next prime is 2154840691. The reversal of 2154840670 is 760484512.

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, 96570 + ... + 116770.

It is an arithmetic number, because the mean of its divisors is an integer number (242454303).

Almost surely, 2^2154840670 is an apocalyptic number.

2154840670 is a deficient number, since it is larger than the sum of its proper divisors (1724428178).

2154840670 is a wasteful number, since it uses less digits than its factorization.

2154840670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30875.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 2154840670 is about 46420.2614167564. The cubic root of 2154840670 is about 1291.6307861186.

The spelling of 2154840670 in words is "two billion, one hundred fifty-four million, eight hundred forty thousand, six hundred seventy".