1078128673 has 4 divisors (see below), whose sum is σ = 1080044208. Its totient is φ = 1076213140.

The previous prime is 1078128631. The next prime is 1078128697. The reversal of 1078128673 is 3768218701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1078128673 - 2¹⁷ = 1077997601 is a prime.

It is a super-2 number, since 2×1078128673² = 2324722871089481858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078128773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956923 + ... + 958048.

It is an arithmetic number, because the mean of its divisors is an integer number (270011052).

Almost surely, 2^1078128673 is an apocalyptic number.

It is an amenable number.

1078128673 is a deficient number, since it is larger than the sum of its proper divisors (1915535).

1078128673 is an equidigital number, since it uses as much as digits as its factorization.

1078128673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915534.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 1078128673 is about 32834.8697728497. The cubic root of 1078128673 is about 1025.3926468727.

The spelling of 1078128673 in words is "one billion, seventy-eight million, one hundred twenty-eight thousand, six hundred seventy-three".