2154172008 has 32 divisors (see below), whose sum is σ = 5407977600. Its totient is φ = 715051008.

The previous prime is 2154172003. The next prime is 2154172057. The reversal of 2154172008 is 8002714512.

It is not an unprimeable number, because it can be changed into a prime (2154172001) by changing a digit.

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, 182041 + ... + 193512.

It is an arithmetic number, because the mean of its divisors is an integer number (168999300).

Almost surely, 2^2154172008 is an apocalyptic number.

It is an amenable number.

2154172008 is an abundant number, since it is smaller than the sum of its proper divisors (3253805592).

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

2154172008 is a wasteful number, since it uses less digits than its factorization.

2154172008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375801 (or 375797 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2154172008 is about 46413.0585934605. The cubic root of 2154172008 is about 1291.4971716344.

The spelling of 2154172008 in words is "two billion, one hundred fifty-four million, one hundred seventy-two thousand, eight".