1121807436 has 12 divisors (see below), whose sum is σ = 2617550712. Its totient is φ = 373935808.

The previous prime is 1121807429. The next prime is 1121807459. The reversal of 1121807436 is 6347081211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1121807397 and 1121807406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46741965 + ... + 46741988.

It is an arithmetic number, because the mean of its divisors is an integer number (218129226).

Almost surely, 2^1121807436 is an apocalyptic number.

It is an amenable number.

1121807436 is an abundant number, since it is smaller than the sum of its proper divisors (1495743276).

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

1121807436 is a wasteful number, since it uses less digits than its factorization.

1121807436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93483960 (or 93483958 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1121807436 is about 33493.3939158157. The cubic root of 1121807436 is about 1039.0571570838.

Adding to 1121807436 its reverse (6347081211), we get a palindrome (7468888647).

The spelling of 1121807436 in words is "one billion, one hundred twenty-one million, eight hundred seven thousand, four hundred thirty-six".