1121155384 has 8 divisors (see below), whose sum is σ = 2102166360. Its totient is φ = 560577688.

The previous prime is 1121155381. The next prime is 1121155397. The reversal of 1121155384 is 4835511211.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121155381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70072204 + ... + 70072219.

It is an arithmetic number, because the mean of its divisors is an integer number (262770795).

Almost surely, 2^1121155384 is an apocalyptic number.

It is an amenable number.

1121155384 is a deficient number, since it is larger than the sum of its proper divisors (981010976).

1121155384 is a wasteful number, since it uses less digits than its factorization.

1121155384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140144429 (or 140144425 counting only the distinct ones).

The product of its digits is 4800, while the sum is 31.

The square root of 1121155384 is about 33483.6584620020. The cubic root of 1121155384 is about 1038.8558003008.

Adding to 1121155384 its reverse (4835511211), we get a palindrome (5956666595).

The spelling of 1121155384 in words is "one billion, one hundred twenty-one million, one hundred fifty-five thousand, three hundred eighty-four".