1020178078 has 4 divisors (see below), whose sum is σ = 1530267120. Its totient is φ = 510089038.

The previous prime is 1020178069. The next prime is 1020178111. The reversal of 1020178078 is 8708710201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255044518 + ... + 255044521.

It is an arithmetic number, because the mean of its divisors is an integer number (382566780).

Almost surely, 2^1020178078 is an apocalyptic number.

1020178078 is a deficient number, since it is larger than the sum of its proper divisors (510089042).

1020178078 is an equidigital number, since it uses as much as digits as its factorization.

1020178078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510089041.

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 1020178078 is about 31940.2266429028. The cubic root of 1020178078 is about 1006.6812869875.

Adding to 1020178078 its reverse (8708710201), we get a palindrome (9728888279).

The spelling of 1020178078 in words is "one billion, twenty million, one hundred seventy-eight thousand, seventy-eight".