2115464789 has 4 divisors (see below), whose sum is σ = 2123102124. Its totient is φ = 2107827456.

The previous prime is 2115464759. The next prime is 2115464803. The reversal of 2115464789 is 9874645112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 708464689 + 1407000100 = 26617^2 + 37510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115464789 - 2¹² = 2115460693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115464719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3818252 + ... + 3818805.

It is an arithmetic number, because the mean of its divisors is an integer number (530775531).

Almost surely, 2^2115464789 is an apocalyptic number.

It is an amenable number.

2115464789 is a deficient number, since it is larger than the sum of its proper divisors (7637335).

2115464789 is an equidigital number, since it uses as much as digits as its factorization.

2115464789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637334.

The product of its digits is 483840, while the sum is 47.

The square root of 2115464789 is about 45994.1821212205. The cubic root of 2115464789 is about 1283.7149540886.

The spelling of 2115464789 in words is "two billion, one hundred fifteen million, four hundred sixty-four thousand, seven hundred eighty-nine".