1445553653 has 8 divisors (see below), whose sum is σ = 1502071296. Its totient is φ = 1389654000.

The previous prime is 1445553643. The next prime is 1445553671. The reversal of 1445553653 is 3563555441.

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 1445553653 - 2⁶ = 1445553589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445553653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445553643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149726 + ... + 159087.

It is an arithmetic number, because the mean of its divisors is an integer number (187758912).

Almost surely, 2^1445553653 is an apocalyptic number.

It is an amenable number.

1445553653 is a deficient number, since it is larger than the sum of its proper divisors (56517643).

1445553653 is a wasteful number, since it uses less digits than its factorization.

1445553653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308995.

The product of its digits is 540000, while the sum is 41.

The square root of 1445553653 is about 38020.4373067959. The cubic root of 1445553653 is about 1130.6930911308.

The spelling of 1445553653 in words is "one billion, four hundred forty-five million, five hundred fifty-three thousand, six hundred fifty-three".