1445643043 has 8 divisors (see below), whose sum is σ = 1568212128. Its totient is φ = 1324697664.

The previous prime is 1445643019. The next prime is 1445643047. The reversal of 1445643043 is 3403465441.

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 1445643043 - 2¹⁷ = 1445511971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445643047) 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, 404071 + ... + 407632.

It is an arithmetic number, because the mean of its divisors is an integer number (196026516).

Almost surely, 2^1445643043 is an apocalyptic number.

1445643043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1445643043 is a deficient number, since it is larger than the sum of its proper divisors (122569085).

1445643043 is a wasteful number, since it uses less digits than its factorization.

1445643043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811853.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 1445643043 is about 38021.6128405937. The cubic root of 1445643043 is about 1130.7163972119.

The spelling of 1445643043 in words is "one billion, four hundred forty-five million, six hundred forty-three thousand, forty-three".