1366636052 has 12 divisors (see below), whose sum is σ = 2532296340. Its totient is φ = 643122816.

The previous prime is 1366636043. The next prime is 1366636079. The reversal of 1366636052 is 2506366631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 743434756 + 623201296 = 27266^2 + 24964^2 .

It is a super-2 number, since 2×1366636052² = 3735388197252293408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1366635997 and 1366636015.

It is a congruent number.

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, 10048727 + ... + 10048862.

It is an arithmetic number, because the mean of its divisors is an integer number (211024695).

Almost surely, 2^1366636052 is an apocalyptic number.

It is an amenable number.

1366636052 is a deficient number, since it is larger than the sum of its proper divisors (1165660288).

1366636052 is a wasteful number, since it uses less digits than its factorization.

1366636052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20097610 (or 20097608 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 1366636052 is about 36968.0409543162. The cubic root of 1366636052 is about 1109.7307606602.

The spelling of 1366636052 in words is "one billion, three hundred sixty-six million, six hundred thirty-six thousand, fifty-two".