1126728849 has 8 divisors (see below), whose sum is σ = 1503136512. Its totient is φ = 750736880.

The previous prime is 1126728829. The next prime is 1126728877. The reversal of 1126728849 is 9488276211.

It is a happy number.

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 1126728849 - 2⁸ = 1126728593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1126728798 and 1126728807.

It is not an unprimeable number, because it can be changed into a prime (1126728809) 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, 97542 + ... + 108479.

It is an arithmetic number, because the mean of its divisors is an integer number (187892064).

Almost surely, 2^1126728849 is an apocalyptic number.

It is an amenable number.

1126728849 is a deficient number, since it is larger than the sum of its proper divisors (376407663).

1126728849 is a wasteful number, since it uses less digits than its factorization.

1126728849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207847.

The product of its digits is 387072, while the sum is 48.

The square root of 1126728849 is about 33566.7819279716. The cubic root of 1126728849 is about 1040.5744019370.

The spelling of 1126728849 in words is "one billion, one hundred twenty-six million, seven hundred twenty-eight thousand, eight hundred forty-nine".