1468981249 has 4 divisors (see below), whose sum is σ = 1469348100. Its totient is φ = 1468614400.

The previous prime is 1468981247. The next prime is 1468981343. The reversal of 1468981249 is 9421898641.

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 1009650625 + 459330624 = 31775^2 + 21432^2 .

It is a cyclic number.

It is not a de Polignac number, because 1468981249 - 2¹ = 1468981247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1468981196 and 1468981205.

It is not an unprimeable number, because it can be changed into a prime (1468981247) 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, 177352 + ... + 185449.

It is an arithmetic number, because the mean of its divisors is an integer number (367337025).

Almost surely, 2^1468981249 is an apocalyptic number.

It is an amenable number.

1468981249 is a deficient number, since it is larger than the sum of its proper divisors (366851).

1468981249 is an equidigital number, since it uses as much as digits as its factorization.

1468981249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366850.

The product of its digits is 995328, while the sum is 52.

The square root of 1468981249 is about 38327.2911774365. The cubic root of 1468981249 is about 1136.7686396228.

The spelling of 1468981249 in words is "one billion, four hundred sixty-eight million, nine hundred eighty-one thousand, two hundred forty-nine".