1445013321 has 16 divisors (see below), whose sum is σ = 1965420864. Its totient is φ = 944121024.

The previous prime is 1445013313. The next prime is 1445013337. The reversal of 1445013321 is 1233105441.

It is a happy number.

It is not a de Polignac number, because 1445013321 - 2³ = 1445013313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1445013291 and 1445013300.

It is not an unprimeable number, because it can be changed into a prime (1445013301) 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 15 ways as a sum of consecutive naturals, for example, 21351 + ... + 57843.

It is an arithmetic number, because the mean of its divisors is an integer number (122838804).

Almost surely, 2^1445013321 is an apocalyptic number.

It is an amenable number.

1445013321 is a deficient number, since it is larger than the sum of its proper divisors (520407543).

1445013321 is a wasteful number, since it uses less digits than its factorization.

1445013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36760.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1445013321 is about 38013.3308327487. The cubic root of 1445013321 is about 1130.5521933749.

Adding to 1445013321 its reverse (1233105441), we get a palindrome (2678118762).

The spelling of 1445013321 in words is "one billion, four hundred forty-five million, thirteen thousand, three hundred twenty-one".