2152646789 has 16 divisors (see below), whose sum is σ = 2243490816. Its totient is φ = 2063232000.

The previous prime is 2152646767. The next prime is 2152646807. The reversal of 2152646789 is 9876462512.

It is a cyclic number.

It is not a de Polignac number, because 2152646789 - 2¹⁶ = 2152581253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152646759) 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 15 ways as a sum of consecutive naturals, for example, 2700539 + ... + 2701335.

It is an arithmetic number, because the mean of its divisors is an integer number (140218176).

Almost surely, 2^2152646789 is an apocalyptic number.

It is an amenable number.

2152646789 is a deficient number, since it is larger than the sum of its proper divisors (90844027).

2152646789 is a wasteful number, since it uses less digits than its factorization.

2152646789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556.

The product of its digits is 1451520, while the sum is 50.

The square root of 2152646789 is about 46396.6247587042. The cubic root of 2152646789 is about 1291.1922933027.

The spelling of 2152646789 in words is "two billion, one hundred fifty-two million, six hundred forty-six thousand, seven hundred eighty-nine".