1445821330 has 8 divisors (see below), whose sum is σ = 2602478412. Its totient is φ = 578328528.

The previous prime is 1445821309. The next prime is 1445821439. The reversal of 1445821330 is 331285441.

It can be written as a sum of positive squares in 2 ways, for example, as 1210413681 + 235407649 = 34791^2 + 15343^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1445821292 and 1445821301.

It is an unprimeable number.

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, 72291057 + ... + 72291076.

Almost surely, 2^1445821330 is an apocalyptic number.

1445821330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1445821330 is a deficient number, since it is larger than the sum of its proper divisors (1156657082).

1445821330 is a wasteful number, since it uses less digits than its factorization.

1445821330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144582140.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1445821330 is about 38023.9573164078. The cubic root of 1445821330 is about 1130.7628779686.

The spelling of 1445821330 in words is "one billion, four hundred forty-five million, eight hundred twenty-one thousand, three hundred thirty".