2154742208 has 28 divisors (see below), whose sum is σ = 4380110112. Its totient is φ = 1051092480.

The previous prime is 2154742171. The next prime is 2154742267. The reversal of 2154742208 is 8022474512.

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 3 ways as a sum of consecutive naturals, for example, 407960 + ... + 413207.

It is an arithmetic number, because the mean of its divisors is an integer number (156432504).

Almost surely, 2^2154742208 is an apocalyptic number.

It is an amenable number.

2154742208 is an abundant number, since it is smaller than the sum of its proper divisors (2225367904).

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

2154742208 is an equidigital number, since it uses as much as digits as its factorization.

2154742208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821220 (or 821210 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 2154742208 is about 46419.2008548187. The cubic root of 2154742208 is about 1291.6111128175.

The spelling of 2154742208 in words is "two billion, one hundred fifty-four million, seven hundred forty-two thousand, two hundred eight".