1122445778 has 8 divisors (see below), whose sum is σ = 1684114572. Its totient is φ = 561074256.

The previous prime is 1122445771. The next prime is 1122445829. The reversal of 1122445778 is 8775442211.

It can be written as a sum of positive squares in 2 ways, for example, as 1116428569 + 6017209 = 33413^2 + 2453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1122445771) 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, 64625 + ... + 80132.

Almost surely, 2^1122445778 is an apocalyptic number.

1122445778 is a deficient number, since it is larger than the sum of its proper divisors (561668794).

1122445778 is a wasteful number, since it uses less digits than its factorization.

1122445778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148636.

The product of its digits is 125440, while the sum is 41.

The square root of 1122445778 is about 33502.9219322733. The cubic root of 1122445778 is about 1039.2542045849.

Adding to 1122445778 its reverse (8775442211), we get a palindrome (9897887989).

The spelling of 1122445778 in words is "one billion, one hundred twenty-two million, four hundred forty-five thousand, seven hundred seventy-eight".