1308749728036 has 27 divisors (see below), whose sum is σ = 2316695474289. Its totient is φ = 646921664928.

The previous prime is 1308749728019. The next prime is 1308749728037. The reversal of 1308749728036 is 6308279478031.

The square root of 1308749728036 is 1144006.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 251307705636 + 1057442022400 = 501306^2 + 1028320^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1308749728037) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 203629855 + ... + 203636281.

Almost surely, 2^{1308749728036} is an apocalyptic number.

1308749728036 is the 1144006-th square number.

It is an amenable number.

1308749728036 is a deficient number, since it is larger than the sum of its proper divisors (1007945746253).

1308749728036 is an frugal number, since it uses more digits than its factorization.

1308749728036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13036 (or 6518 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 1308749728036 in words is "one trillion, three hundred eight billion, seven hundred forty-nine million, seven hundred twenty-eight thousand, thirty-six".