1078021078 has 4 divisors (see below), whose sum is σ = 1617031620. Its totient is φ = 539010538.

The previous prime is 1078021073. The next prime is 1078021081. The reversal of 1078021078 is 8701208701.

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

It is a super-2 number, since 2×1078021078² = 2324258889224564168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078021073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269505268 + ... + 269505271.

It is an arithmetic number, because the mean of its divisors is an integer number (404257905).

Almost surely, 2^1078021078 is an apocalyptic number.

1078021078 is a deficient number, since it is larger than the sum of its proper divisors (539010542).

1078021078 is an equidigital number, since it uses as much as digits as its factorization.

1078021078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539010541.

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

The square root of 1078021078 is about 32833.2313061021. The cubic root of 1078021078 is about 1025.3585350532.

Adding to 1078021078 its reverse (8701208701), we get a palindrome (9779229779).

The spelling of 1078021078 in words is "one billion, seventy-eight million, twenty-one thousand, seventy-eight".