2156154254 has 16 divisors (see below), whose sum is σ = 3253516800. Its totient is φ = 1071659160.

The previous prime is 2156154229. The next prime is 2156154271. The reversal of 2156154254 is 4524516512.

It is a Curzon number.

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, 612359 + ... + 615869.

It is an arithmetic number, because the mean of its divisors is an integer number (203344800).

Almost surely, 2^2156154254 is an apocalyptic number.

2156154254 is a deficient number, since it is larger than the sum of its proper divisors (1097362546).

2156154254 is a wasteful number, since it uses less digits than its factorization.

2156154254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255.

The product of its digits is 48000, while the sum is 35.

The square root of 2156154254 is about 46434.4080828000. The cubic root of 2156154254 is about 1291.8931908080.

The spelling of 2156154254 in words is "two billion, one hundred fifty-six million, one hundred fifty-four thousand, two hundred fifty-four".