1121780966 has 4 divisors (see below), whose sum is σ = 1682671452. Its totient is φ = 560890482.

The previous prime is 1121780953. The next prime is 1121780969. The reversal of 1121780966 is 6690871211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121780969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280445240 + ... + 280445243.

It is an arithmetic number, because the mean of its divisors is an integer number (420667863).

Almost surely, 2^1121780966 is an apocalyptic number.

1121780966 is a deficient number, since it is larger than the sum of its proper divisors (560890486).

1121780966 is an equidigital number, since it uses as much as digits as its factorization.

1121780966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560890485.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1121780966 is about 33492.9987609351. The cubic root of 1121780966 is about 1039.0489845406.

The spelling of 1121780966 in words is "one billion, one hundred twenty-one million, seven hundred eighty thousand, nine hundred sixty-six".