1121788907 has 8 divisors (see below), whose sum is σ = 1136249856. Its totient is φ = 1107350632.

The previous prime is 1121788901. The next prime is 1121788981. The reversal of 1121788907 is 7098871211.

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 1121788907 - 2¹⁰ = 1121787883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121788901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108518 + ... + 118404.

It is an arithmetic number, because the mean of its divisors is an integer number (142031232).

Almost surely, 2^1121788907 is an apocalyptic number.

1121788907 is a deficient number, since it is larger than the sum of its proper divisors (14460949).

1121788907 is an equidigital number, since it uses as much as digits as its factorization.

1121788907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11337.

The product of its (nonzero) digits is 56448, while the sum is 44.

The square root of 1121788907 is about 33493.1173078888. The cubic root of 1121788907 is about 1039.0514363170.

The spelling of 1121788907 in words is "one billion, one hundred twenty-one million, seven hundred eighty-eight thousand, nine hundred seven".