1120381649 has 4 divisors (see below), whose sum is σ = 1120449600. Its totient is φ = 1120313700.

The previous prime is 1120381643. The next prime is 1120381663. The reversal of 1120381649 is 9461830211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120381649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1120381643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8252 + ... + 48050.

It is an arithmetic number, because the mean of its divisors is an integer number (280112400).

Almost surely, 2^1120381649 is an apocalyptic number.

It is an amenable number.

1120381649 is a deficient number, since it is larger than the sum of its proper divisors (67951).

1120381649 is an equidigital number, since it uses as much as digits as its factorization.

1120381649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67950.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1120381649 is about 33472.1025482416. The cubic root of 1120381649 is about 1038.6167659136.

The spelling of 1120381649 in words is "one billion, one hundred twenty million, three hundred eighty-one thousand, six hundred forty-nine".