2150908921 has 8 divisors (see below), whose sum is σ = 2458939904. Its totient is φ = 1843067520.

The previous prime is 2150908919. The next prime is 2150908939. The reversal of 2150908921 is 1298090512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2150908921 - 2¹ = 2150908919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150908961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22185 + ... + 69238.

It is an arithmetic number, because the mean of its divisors is an integer number (307367488).

Almost surely, 2^2150908921 is an apocalyptic number.

It is an amenable number.

2150908921 is a deficient number, since it is larger than the sum of its proper divisors (308030983).

2150908921 is an equidigital number, since it uses as much as digits as its factorization.

2150908921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94791.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 2150908921 is about 46377.8925890343. The cubic root of 2150908921 is about 1290.8447326620.

The spelling of 2150908921 in words is "two billion, one hundred fifty million, nine hundred eight thousand, nine hundred twenty-one".