1121628263 has 8 divisors (see below), whose sum is σ = 1283573760. Its totient is φ = 960111000.

The previous prime is 1121628259. The next prime is 1121628293. The reversal of 1121628263 is 3628261211.

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 1121628263 - 2² = 1121628259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121628293) 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, 101423 + ... + 111936.

It is an arithmetic number, because the mean of its divisors is an integer number (160446720).

Almost surely, 2^1121628263 is an apocalyptic number.

1121628263 is a deficient number, since it is larger than the sum of its proper divisors (161945497).

1121628263 is an equidigital number, since it uses as much as digits as its factorization.

1121628263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214117.

The product of its digits is 6912, while the sum is 32.

The square root of 1121628263 is about 33490.7190576733. The cubic root of 1121628263 is about 1039.0018353787.

Adding to 1121628263 its reverse (3628261211), we get a palindrome (4749889474).

The spelling of 1121628263 in words is "one billion, one hundred twenty-one million, six hundred twenty-eight thousand, two hundred sixty-three".