1121980936 has 8 divisors (see below), whose sum is σ = 2103714270. Its totient is φ = 560990464.

The previous prime is 1121980907. The next prime is 1121980939. The reversal of 1121980936 is 6390891211.

It can be written as a sum of positive squares in only one way, i.e., 875804836 + 246176100 = 29594^2 + 15690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1121980939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70123801 + ... + 70123816.

Almost surely, 2^1121980936 is an apocalyptic number.

It is an amenable number.

1121980936 is a deficient number, since it is larger than the sum of its proper divisors (981733334).

1121980936 is a wasteful number, since it uses less digits than its factorization.

1121980936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140247623 (or 140247619 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1121980936 is about 33495.9838786682. The cubic root of 1121980936 is about 1039.1107215720.

The spelling of 1121980936 in words is "one billion, one hundred twenty-one million, nine hundred eighty thousand, nine hundred thirty-six".