1121649794 has 8 divisors (see below), whose sum is σ = 1684772220. Its totient is φ = 560059056.

The previous prime is 1121649787. The next prime is 1121649803. The reversal of 1121649794 is 4979461211.

It can be written as a sum of positive squares in 2 ways, for example, as 1116428569 + 5221225 = 33413^2 + 2285^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381089 + ... + 384020.

Almost surely, 2^1121649794 is an apocalyptic number.

1121649794 is a deficient number, since it is larger than the sum of its proper divisors (563122426).

1121649794 is an equidigital number, since it uses as much as digits as its factorization.

1121649794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765844.

The product of its digits is 108864, while the sum is 44.

The square root of 1121649794 is about 33491.0405033943. The cubic root of 1121649794 is about 1039.0084836317.

The spelling of 1121649794 in words is "one billion, one hundred twenty-one million, six hundred forty-nine thousand, seven hundred ninety-four".