1096639778 has 8 divisors (see below), whose sum is σ = 1771495068. Its totient is φ = 506141424.

The previous prime is 1096639763. The next prime is 1096639783. The reversal of 1096639778 is 8779366901.

It can be written as a sum of positive squares in 2 ways, for example, as 971132569 + 125507209 = 31163^2 + 11203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21089201 + ... + 21089252.

Almost surely, 2^1096639778 is an apocalyptic number.

1096639778 is a deficient number, since it is larger than the sum of its proper divisors (674855290).

1096639778 is a wasteful number, since it uses less digits than its factorization.

1096639778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42178468.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 1096639778 is about 33115.5519054115. The cubic root of 1096639778 is about 1031.2279250469.

The spelling of 1096639778 in words is "one billion, ninety-six million, six hundred thirty-nine thousand, seven hundred seventy-eight".