1468332721 has 4 divisors (see below), whose sum is σ = 1554705252. Its totient is φ = 1381960192.

The previous prime is 1468332707. The next prime is 1468332743. The reversal of 1468332721 is 1272338641.

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: 1272338641 = 7 ⋅181762663.

It can be written as a sum of positive squares in 2 ways, for example, as 735006321 + 733326400 = 27111^2 + 27080^2 .

It is not a de Polignac number, because 1468332721 - 2⁵ = 1468332689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1468332751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43186240 + ... + 43186273.

It is an arithmetic number, because the mean of its divisors is an integer number (388676313).

Almost surely, 2^1468332721 is an apocalyptic number.

It is an amenable number.

1468332721 is a deficient number, since it is larger than the sum of its proper divisors (86372531).

1468332721 is an equidigital number, since it uses as much as digits as its factorization.

1468332721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86372530.

The product of its digits is 48384, while the sum is 37.

The square root of 1468332721 is about 38318.8298490442. The cubic root of 1468332721 is about 1136.6013275690.

The spelling of 1468332721 in words is "one billion, four hundred sixty-eight million, three hundred thirty-two thousand, seven hundred twenty-one".