1363628778 has 16 divisors (see below), whose sum is σ = 2821301280. Its totient is φ = 438868976.

The previous prime is 1363628767. The next prime is 1363628809. The reversal of 1363628778 is 8778263631.

It is a self number, because there is not a number n which added to its sum of digits gives 1363628778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3918300 + ... + 3918647.

It is an arithmetic number, because the mean of its divisors is an integer number (176331330).

Almost surely, 2^1363628778 is an apocalyptic number.

1363628778 is an abundant number, since it is smaller than the sum of its proper divisors (1457672502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1363628778 is a wasteful number, since it uses less digits than its factorization.

1363628778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7836981.

The product of its digits is 2032128, while the sum is 51.

The square root of 1363628778 is about 36927.3445836551. The cubic root of 1363628778 is about 1108.9161776965.

The spelling of 1363628778 in words is "one billion, three hundred sixty-three million, six hundred twenty-eight thousand, seven hundred seventy-eight".