1121565630 has 48 divisors (see below), whose sum is σ = 2840912784. Its totient is φ = 283340160.

The previous prime is 1121565593. The next prime is 1121565727. The reversal of 1121565630 is 365651211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40951 + ... + 62610.

It is an arithmetic number, because the mean of its divisors is an integer number (59185683).

Almost surely, 2^1121565630 is an apocalyptic number.

1121565630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121565630 is an abundant number, since it is smaller than the sum of its proper divisors (1719347154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121565630 is a wasteful number, since it uses less digits than its factorization.

1121565630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103609 (or 103590 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1121565630 is about 33489.7839646660. The cubic root of 1121565630 is about 1038.9824953366.

The spelling of 1121565630 in words is "one billion, one hundred twenty-one million, five hundred sixty-five thousand, six hundred thirty".