1368166747 has 4 divisors (see below), whose sum is σ = 1368344016. Its totient is φ = 1367989480.

The previous prime is 1368166721. The next prime is 1368166837. The reversal of 1368166747 is 7476618631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7476618631 = 277 ⋅26991403.

It is a cyclic number.

It is not a de Polignac number, because 1368166747 - 2¹⁹ = 1367642459 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1368166747.

It is not an unprimeable number, because it can be changed into a prime (1368166717) 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, 76504 + ... + 92677.

It is an arithmetic number, because the mean of its divisors is an integer number (342086004).

Almost surely, 2^1368166747 is an apocalyptic number.

1368166747 is a deficient number, since it is larger than the sum of its proper divisors (177269).

1368166747 is an equidigital number, since it uses as much as digits as its factorization.

1368166747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177268.

The product of its digits is 1016064, while the sum is 49.

The square root of 1368166747 is about 36988.7381104033. The cubic root of 1368166747 is about 1110.1449225059.

The spelling of 1368166747 in words is "one billion, three hundred sixty-eight million, one hundred sixty-six thousand, seven hundred forty-seven".