1128736943 has 8 divisors (see below), whose sum is σ = 1136463600. Its totient is φ = 1121024448.

The previous prime is 1128736909. The next prime is 1128736949. The reversal of 1128736943 is 3496378211.

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 1128736943 - 2¹⁶ = 1128671407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1128736894 and 1128736903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128736949) 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, 192428 + ... + 198206.

It is an arithmetic number, because the mean of its divisors is an integer number (142057950).

Almost surely, 2^1128736943 is an apocalyptic number.

1128736943 is a deficient number, since it is larger than the sum of its proper divisors (7726657).

1128736943 is a wasteful number, since it uses less digits than its factorization.

1128736943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081.

The product of its digits is 217728, while the sum is 44.

The square root of 1128736943 is about 33596.6805354339. The cubic root of 1128736943 is about 1041.1922172687.

The spelling of 1128736943 in words is "one billion, one hundred twenty-eight million, seven hundred thirty-six thousand, nine hundred forty-three".