1360645778 has 6 divisors (see below), whose sum is σ = 2041046919. Its totient is φ = 680296806.

The previous prime is 1360645771. The next prime is 1360645789. The reversal of 1360645778 is 8775460631.

It can be written as a sum of positive squares in only one way, i.e., 680322889 + 680322889 = 26083^2 + 26083^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=26083.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1360645771) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 39125 + ... + 65207.

Almost surely, 2^1360645778 is an apocalyptic number.

1360645778 is a deficient number, since it is larger than the sum of its proper divisors (680401141).

1360645778 is an frugal number, since it uses more digits than its factorization.

1360645778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52168 (or 26085 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 1360645778 is about 36886.9323473774. The cubic root of 1360645778 is about 1108.1069858290.

The spelling of 1360645778 in words is "one billion, three hundred sixty million, six hundred forty-five thousand, seven hundred seventy-eight".