1100001078 has 36 divisors (see below), whose sum is σ = 2619704724. Its totient is φ = 333333000.

The previous prime is 1100001073. The next prime is 1100001079. The reversal of 1100001078 is 8701000011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1100001078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100001073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 250348 + ... + 254703.

Almost surely, 2^1100001078 is an apocalyptic number.

1100001078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1100001078 is an abundant number, since it is smaller than the sum of its proper divisors (1519703646).

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

1100001078 is a wasteful number, since it uses less digits than its factorization.

1100001078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505081 (or 505067 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 1100001078 is about 33166.2641550115. The cubic root of 1100001078 is about 1032.2804526678.

Adding to 1100001078 its reverse (8701000011), we get a palindrome (9801001089).

The spelling of 1100001078 in words is "one billion, one hundred million, one thousand, seventy-eight".