1445369643 has 8 divisors (see below), whose sum is σ = 2141288400. Its totient is φ = 963579744.

The previous prime is 1445369633. The next prime is 1445369659. The reversal of 1445369643 is 3469635441.

It is not a de Polignac number, because 1445369643 - 2¹² = 1445365547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1445369603) 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, 26766078 + ... + 26766131.

It is an arithmetic number, because the mean of its divisors is an integer number (267661050).

Almost surely, 2^1445369643 is an apocalyptic number.

1445369643 is a deficient number, since it is larger than the sum of its proper divisors (695918757).

1445369643 is an equidigital number, since it uses as much as digits as its factorization.

1445369643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53532218 (or 53532212 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 1445369643 is about 38018.0173470422. The cubic root of 1445369643 is about 1130.6451123595.

The spelling of 1445369643 in words is "one billion, four hundred forty-five million, three hundred sixty-nine thousand, six hundred forty-three".