1111127778 has 12 divisors (see below), whose sum is σ = 2407443558. Its totient is φ = 370375920.

The previous prime is 1111127753. The next prime is 1111127807. The reversal of 1111127778 is 8777211111.

It can be written as a sum of positive squares in only one way, i.e., 1094749569 + 16378209 = 33087^2 + 4047^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30864643 + ... + 30864678.

Almost surely, 2^1111127778 is an apocalyptic number.

1111127778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1111127778 is an abundant number, since it is smaller than the sum of its proper divisors (1296315780).

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

1111127778 is a wasteful number, since it uses less digits than its factorization.

1111127778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61729329 (or 61729326 counting only the distinct ones).

The product of its digits is 5488, while the sum is 36.

The square root of 1111127778 is about 33333.5833357291. The cubic root of 1111127778 is about 1035.7493474153.

Adding to 1111127778 its reverse (8777211111), we get a palindrome (9888338889).

The spelling of 1111127778 in words is "one billion, one hundred eleven million, one hundred twenty-seven thousand, seven hundred seventy-eight".