2153331709 has 2 divisors, whose sum is σ = 2153331710. Its totient is φ = 2153331708.

The previous prime is 2153331701. The next prime is 2153331721. The reversal of 2153331709 is 9071333512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357922500 + 795409209 = 36850^2 + 28203^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153331709 - 2³ = 2153331701 is a prime.

It is a super-3 number, since 3×2153331709³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153331701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076665854 + 1076665855.

It is an arithmetic number, because the mean of its divisors is an integer number (1076665855).

Almost surely, 2^2153331709 is an apocalyptic number.

It is an amenable number.

2153331709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153331709 is an equidigital number, since it uses as much as digits as its factorization.

2153331709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 2153331709 is about 46404.0053120418. The cubic root of 2153331709 is about 1291.3292208055.

The spelling of 2153331709 in words is "two billion, one hundred fifty-three million, three hundred thirty-one thousand, seven hundred nine".