1078128855 has 24 divisors (see below), whose sum is σ = 1869573888. Its totient is φ = 574750656.

The previous prime is 1078128851. The next prime is 1078128869. The reversal of 1078128855 is 5588218701.

It is not a de Polignac number, because 1078128855 - 2² = 1078128851 is a prime.

It is a super-2 number, since 2×1078128855² = 2324723655967222050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1078128855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078128851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148234 + ... + 155336.

It is an arithmetic number, because the mean of its divisors is an integer number (77898912).

Almost surely, 2^1078128855 is an apocalyptic number.

1078128855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1078128855 is a deficient number, since it is larger than the sum of its proper divisors (791445033).

1078128855 is a wasteful number, since it uses less digits than its factorization.

1078128855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487 (or 10484 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The square root of 1078128855 is about 32834.8725442935. The cubic root of 1078128855 is about 1025.3927045719.

The spelling of 1078128855 in words is "one billion, seventy-eight million, one hundred twenty-eight thousand, eight hundred fifty-five".