2148322489 has 2 divisors, whose sum is σ = 2148322490. Its totient is φ = 2148322488.

The previous prime is 2148322481. The next prime is 2148322493. The reversal of 2148322489 is 9842238412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2053902400 + 94420089 = 45320^2 + 9717^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148322489 - 2³ = 2148322481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2148322481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074161244 + 1074161245.

It is an arithmetic number, because the mean of its divisors is an integer number (1074161245).

Almost surely, 2^2148322489 is an apocalyptic number.

It is an amenable number.

2148322489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148322489 is an equidigital number, since it uses as much as digits as its factorization.

2148322489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 43.

The square root of 2148322489 is about 46349.9998813376. Note that the first 3 decimals coincide. The cubic root of 2148322489 is about 1290.3271187327.

The spelling of 2148322489 in words is "two billion, one hundred forty-eight million, three hundred twenty-two thousand, four hundred eighty-nine".