1068269978 has 8 divisors (see below), whose sum is σ = 1617106260. Its totient is φ = 529234560.

The previous prime is 1068269977. The next prime is 1068269999. The reversal of 1068269978 is 8799628601.

It can be written as a sum of positive squares in 2 ways, for example, as 989291209 + 78978769 = 31453^2 + 8887^2 .

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

It is a super-2 number, since 2×1068269978² = 2282401491792240968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1068269977) 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, 2449943 + ... + 2450378.

Almost surely, 2^1068269978 is an apocalyptic number.

1068269978 is a deficient number, since it is larger than the sum of its proper divisors (548836282).

1068269978 is a wasteful number, since it uses less digits than its factorization.

1068269978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900432.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 1068269978 is about 32684.3996120473. The cubic root of 1068269978 is about 1022.2575838263.

The spelling of 1068269978 in words is "one billion, sixty-eight million, two hundred sixty-nine thousand, nine hundred seventy-eight".