1121530647 has 8 divisors (see below), whose sum is σ = 1583337456. Its totient is φ = 703705472.

The previous prime is 1121530639. The next prime is 1121530661. The reversal of 1121530647 is 7460351211.

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 1121530647 - 2³ = 1121530639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121530607) 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, 10995348 + ... + 10995449.

It is an arithmetic number, because the mean of its divisors is an integer number (197917182).

Almost surely, 2^1121530647 is an apocalyptic number.

1121530647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1121530647 is a deficient number, since it is larger than the sum of its proper divisors (461806809).

1121530647 is a wasteful number, since it uses less digits than its factorization.

1121530647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21990817.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1121530647 is about 33489.2616669881. The cubic root of 1121530647 is about 1038.9716928472.

Adding to 1121530647 its reverse (7460351211), we get a palindrome (8581881858).

The spelling of 1121530647 in words is "one billion, one hundred twenty-one million, five hundred thirty thousand, six hundred forty-seven".