1822248908649 has 27 divisors (see below), whose sum is σ = 2850266537157. Its totient is φ = 1121351546016.

The previous prime is 1822248908647. The next prime is 1822248908651. The reversal of 1822248908649 is 9468098422281.

The square root of 1822248908649 is 1349907.

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

1822248908649 is a `hidden beast` number, since 18 + 2 + 22 + 489 + 0 + 86 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (1822248908647) and next prime (1822248908651).

It can be written as a sum of positive squares in 4 ways, for example, as 446882891049 + 1375366017600 = 668493^2 + 1172760^2 .

It is not a de Polignac number, because 1822248908649 - 2¹ = 1822248908647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1822248908647) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 52629067 + ... + 52663679.

Almost surely, 2^{1822248908649} is an apocalyptic number.

1822248908649 is the 1349907-th square number.

1822248908649 is the 674954-th centered octagonal number.

It is an amenable number.

1822248908649 is a deficient number, since it is larger than the sum of its proper divisors (1028017628508).

1822248908649 is an frugal number, since it uses more digits than its factorization.

1822248908649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69258 (or 34629 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 1822248908649 in words is "one trillion, eight hundred twenty-two billion, two hundred forty-eight million, nine hundred eight thousand, six hundred forty-nine".