1000778396 has 12 divisors (see below), whose sum is σ = 1756060152. Its totient is φ = 499046928.

The previous prime is 1000778353. The next prime is 1000778411. The reversal of 1000778396 is 6938770001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333890 + ... + 336873.

It is an arithmetic number, because the mean of its divisors is an integer number (146338346).

Almost surely, 2^1000778396 is an apocalyptic number.

It is an amenable number.

1000778396 is a deficient number, since it is larger than the sum of its proper divisors (755281756).

1000778396 is a wasteful number, since it uses less digits than its factorization.

1000778396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671140 (or 671138 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1000778396 is about 31635.0817289919. The cubic root of 1000778396 is about 1000.2593980402.

The spelling of 1000778396 in words is "one billion, seven hundred seventy-eight thousand, three hundred ninety-six".