2179302489 has 189 divisors, whose sum is σ = 4343812623. Its totient is φ = 1089021024.

The previous prime is 2179302487. The next prime is 2179302493. The reversal of 2179302489 is 9842039712.

The square root of 2179302489 is 46683.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 322382025 + 1856920464 = 17955^2 + 43092^2 .

It is a tau number, because it is divible by the number of its divisors (189).

It is not a de Polignac number, because 2179302489 - 2¹ = 2179302487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2179302481) 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 188 ways as a sum of consecutive naturals, for example, 114700122 + ... + 114700140.

Almost surely, 2^2179302489 is an apocalyptic number.

2179302489 is the 46683-rd square number.

2179302489 is the 23342-nd centered octagonal number.

It is an amenable number.

2179302489 is a deficient number, since it is larger than the sum of its proper divisors (2164510134).

2179302489 is an equidigital number, since it uses as much as digits as its factorization.

2179302489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The cubic root of 2179302489 is about 1296.4999517871.

The spelling of 2179302489 in words is "two billion, one hundred seventy-nine million, three hundred two thousand, four hundred eighty-nine".