1121893405 has 8 divisors (see below), whose sum is σ = 1346499000. Its totient is φ = 897363456.

The previous prime is 1121893397. The next prime is 1121893417. The reversal of 1121893405 is 5043981211.

1121893405 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 136749636 + 985143769 = 11694^2 + 31387^2 .

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 1121893405 - 2³ = 1121893397 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 21621 + ... + 52069.

It is an arithmetic number, because the mean of its divisors is an integer number (168312375).

Almost surely, 2^1121893405 is an apocalyptic number.

It is an amenable number.

1121893405 is a deficient number, since it is larger than the sum of its proper divisors (224605595).

1121893405 is an equidigital number, since it uses as much as digits as its factorization.

1121893405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37823.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1121893405 is about 33494.6772637086. The cubic root of 1121893405 is about 1039.0836989008.

The spelling of 1121893405 in words is "one billion, one hundred twenty-one million, eight hundred ninety-three thousand, four hundred five".