1445643001 has 8 divisors (see below), whose sum is σ = 1577416608. Its totient is φ = 1313928000.

The previous prime is 1445642993. The next prime is 1445643019. The reversal of 1445643001 is 1003465441.

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

It is not a de Polignac number, because 1445643001 - 2³ = 1445642993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445643091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48961 + ... + 72721.

It is an arithmetic number, because the mean of its divisors is an integer number (197177076).

Almost surely, 2^1445643001 is an apocalyptic number.

1445643001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1445643001 is a deficient number, since it is larger than the sum of its proper divisors (131773607).

1445643001 is a wasteful number, since it uses less digits than its factorization.

1445643001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29303.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1445643001 is about 38021.6122882763. The cubic root of 1445643001 is about 1130.7163862618.

It can be divided in two parts, 1445 and 643001, that added together give a palindrome (644446).

The spelling of 1445643001 in words is "one billion, four hundred forty-five million, six hundred forty-three thousand, one".