1363226778 has 24 divisors (see below), whose sum is σ = 2954423316. Its totient is φ = 454291200.

The previous prime is 1363226773. The next prime is 1363226791. The reversal of 1363226778 is 8776223631.

1363226778 is a `hidden beast` number, since 1 + 3 + 632 + 2 + 6 + 7 + 7 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1009523529 + 353703249 = 31773^2 + 18807^2 .

It is a super-2 number, since 2×1363226778² = 3716774496512522568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1363226773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87888 + ... + 102228.

Almost surely, 2^1363226778 is an apocalyptic number.

1363226778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1363226778 is an abundant number, since it is smaller than the sum of its proper divisors (1591196538).

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

1363226778 is a wasteful number, since it uses less digits than its factorization.

1363226778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19630 (or 19627 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 1363226778 is about 36921.9010615651. The cubic root of 1363226778 is about 1108.8071968839.

The spelling of 1363226778 in words is "one billion, three hundred sixty-three million, two hundred twenty-six thousand, seven hundred seventy-eight".