1445013021 has 8 divisors (see below), whose sum is σ = 1928039904. Its totient is φ = 962664080.

The previous prime is 1445013001. The next prime is 1445013047. The reversal of 1445013021 is 1203105441.

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

It is a cyclic number.

It is not a de Polignac number, because 1445013021 - 2¹⁵ = 1444980253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445013001) 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 7 ways as a sum of consecutive naturals, for example, 164490 + ... + 173051.

It is an arithmetic number, because the mean of its divisors is an integer number (241004988).

Almost surely, 2^1445013021 is an apocalyptic number.

It is an amenable number.

1445013021 is a deficient number, since it is larger than the sum of its proper divisors (483026883).

1445013021 is a wasteful number, since it uses less digits than its factorization.

1445013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338971.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1445013021 is about 38013.3268867643. The cubic root of 1445013021 is about 1130.5521151367.

Adding to 1445013021 its reverse (1203105441), we get a palindrome (2648118462).

The spelling of 1445013021 in words is "one billion, four hundred forty-five million, thirteen thousand, twenty-one".