1368841778 has 8 divisors (see below), whose sum is σ = 2073197568. Its totient is φ = 677775924.

The previous prime is 1368841699. The next prime is 1368841781. The reversal of 1368841778 is 8771488631.

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, 3322226 + ... + 3322637.

It is an arithmetic number, because the mean of its divisors is an integer number (259149696).

Almost surely, 2^1368841778 is an apocalyptic number.

1368841778 is a deficient number, since it is larger than the sum of its proper divisors (704355790).

1368841778 is a wasteful number, since it uses less digits than its factorization.

1368841778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644968.

The product of its digits is 1806336, while the sum is 53.

The square root of 1368841778 is about 36997.8618030826. The cubic root of 1368841778 is about 1110.3274682441.

The spelling of 1368841778 in words is "one billion, three hundred sixty-eight million, eight hundred forty-one thousand, seven hundred seventy-eight".