1135439978 has 8 divisors (see below), whose sum is σ = 1744700580. Its totient is φ = 553873120.

The previous prime is 1135439953. The next prime is 1135440049. The reversal of 1135439978 is 8799345311.

It can be written as a sum of positive squares in 2 ways, for example, as 1042837849 + 92602129 = 32293^2 + 9623^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6923333 + ... + 6923496.

Almost surely, 2^1135439978 is an apocalyptic number.

1135439978 is a deficient number, since it is larger than the sum of its proper divisors (609260602).

1135439978 is a wasteful number, since it uses less digits than its factorization.

1135439978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13846872.

The product of its digits is 816480, while the sum is 50.

The square root of 1135439978 is about 33696.2902705921. The cubic root of 1135439978 is about 1043.2492002325.

The spelling of 1135439978 in words is "one billion, one hundred thirty-five million, four hundred thirty-nine thousand, nine hundred seventy-eight".