1101140778 has 16 divisors (see below), whose sum is σ = 2298033216. Its totient is φ = 351088320.

The previous prime is 1101140771. The next prime is 1101140791. The reversal of 1101140778 is 8770411011.

It is a super-2 number, since 2×1101140778² = 2425022025948890568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1101140771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989503 + ... + 3989778.

It is an arithmetic number, because the mean of its divisors is an integer number (143627076).

Almost surely, 2^1101140778 is an apocalyptic number.

1101140778 is an abundant number, since it is smaller than the sum of its proper divisors (1196892438).

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

1101140778 is a wasteful number, since it uses less digits than its factorization.

1101140778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7979309.

The product of its (nonzero) digits is 1568, while the sum is 30.

The square root of 1101140778 is about 33183.4413224427. The cubic root of 1101140778 is about 1032.6368413940.

Adding to 1101140778 its reverse (8770411011), we get a palindrome (9871551789).

The spelling of 1101140778 in words is "one billion, one hundred one million, one hundred forty thousand, seven hundred seventy-eight".