7018648289 has 4 divisors (see below), whose sum is σ = 7208341524. Its totient is φ = 6828955056.

The previous prime is 7018648243. The next prime is 7018648309. The reversal of 7018648289 is 9828468107.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9828468107 = 26017 ⋅377771.

It can be written as a sum of positive squares in 2 ways, for example, as 3393645025 + 3625003264 = 58255^2 + 60208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7018648289 is a prime.

It is a super-2 number, since 2×7018648289² = 98522847609365255042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7018648289.

It is not an unprimeable number, because it can be changed into a prime (7018648489) 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 3 ways as a sum of consecutive naturals, for example, 94846562 + ... + 94846635.

It is an arithmetic number, because the mean of its divisors is an integer number (1802085381).

Almost surely, 2^7018648289 is an apocalyptic number.

It is an amenable number.

7018648289 is a deficient number, since it is larger than the sum of its proper divisors (189693235).

7018648289 is a wasteful number, since it uses less digits than its factorization.

7018648289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189693234.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 7018648289 is about 83777.3733713346. The cubic root of 7018648289 is about 1914.6283857397.

The spelling of 7018648289 in words is "seven billion, eighteen million, six hundred forty-eight thousand, two hundred eighty-nine".