1122781996 has 12 divisors (see below), whose sum is σ = 2245564048. Its totient is φ = 481192272.

The previous prime is 1122781973. The next prime is 1122781999. The reversal of 1122781996 is 6991872211.

1122781996 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1122781999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20049651 + ... + 20049706.

Almost surely, 2^1122781996 is an apocalyptic number.

It is an amenable number.

1122781996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1122781996 is a wasteful number, since it uses less digits than its factorization.

1122781996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40099368 (or 40099366 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The square root of 1122781996 is about 33507.9392980231. The cubic root of 1122781996 is about 1039.3579604767.

The spelling of 1122781996 in words is "one billion, one hundred twenty-two million, seven hundred eighty-one thousand, nine hundred ninety-six".