1243883845149 has 8 divisors (see below), whose sum is σ = 1809285592992. Its totient is φ = 753868997040.

The previous prime is 1243883845147. The next prime is 1243883845157. The reversal of 1243883845149 is 9415483883421.

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

It is not a de Polignac number, because 1243883845149 - 2¹ = 1243883845147 is a prime.

It is a super-2 number, since 2×1243883845149² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243883845092 and 1243883845101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243883845147) 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, 18846724894 + ... + 18846724959.

It is an arithmetic number, because the mean of its divisors is an integer number (226160699124).

Almost surely, 2^{1243883845149} is an apocalyptic number.

It is an amenable number.

1243883845149 is a deficient number, since it is larger than the sum of its proper divisors (565401747843).

1243883845149 is a wasteful number, since it uses less digits than its factorization.

1243883845149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37693449867.

The product of its digits is 26542080, while the sum is 60.

The spelling of 1243883845149 in words is "one trillion, two hundred forty-three billion, eight hundred eighty-three million, eight hundred forty-five thousand, one hundred forty-nine".