2152309806 has 36 divisors (see below), whose sum is σ = 4842480552. Its totient is φ = 717432228.

The previous prime is 2152309799. The next prime is 2152309811. The reversal of 2152309806 is 6089032512.

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 17 ways as a sum of consecutive naturals, for example, 68890 + ... + 95133.

Almost surely, 2^2152309806 is an apocalyptic number.

2152309806 is an abundant number, since it is smaller than the sum of its proper divisors (2690170746).

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

2152309806 is an frugal number, since it uses more digits than its factorization.

2152309806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164049 (or 164028 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2152309806 is about 46392.9930700747. The cubic root of 2152309806 is about 1291.1249138389.

The spelling of 2152309806 in words is "two billion, one hundred fifty-two million, three hundred nine thousand, eight hundred six".