1144969621858 has 8 divisors (see below), whose sum is σ = 1759343565420. Its totient is φ = 558521766720.

The previous prime is 1144969621841. The next prime is 1144969621883. The reversal of 1144969621858 is 8581269694411.

It can be written as a sum of positive squares in 2 ways, for example, as 1080450065809 + 64519556049 = 1039447^2 + 254007^2 .

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

It is a super-2 number, since 2×1144969621858² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1144969621858.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6981522003 + ... + 6981522166.

Almost surely, 2^{1144969621858} is an apocalyptic number.

1144969621858 is a deficient number, since it is larger than the sum of its proper divisors (614373943562).

1144969621858 is a wasteful number, since it uses less digits than its factorization.

1144969621858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13963044212.

The product of its digits is 29859840, while the sum is 64.

The spelling of 1144969621858 in words is "one trillion, one hundred forty-four billion, nine hundred sixty-nine million, six hundred twenty-one thousand, eight hundred fifty-eight".