1308880147969 has 9 divisors (see below), whose sum is σ = 1311786781507. Its totient is φ = 1305979948264.

The previous prime is 1308880147963. The next prime is 1308880148039. The reversal of 1308880147969 is 9697410888031.

The square root of 1308880147969 is 1144063.

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., 1054036915569 + 254843232400 = 1026663^2 + 504820^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1308880147969 is a prime.

It is a super-2 number, since 2×1308880147969² (a number of 25 digits) contains 22 as substring.

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 1308880147969.

It is not an unprimeable number, because it can be changed into a prime (1308880147963) 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, 671564007 + ... + 671565955.

Almost surely, 2^{1308880147969} is an apocalyptic number.

1308880147969 is the 1144063-rd square number.

1308880147969 is the 572032-nd centered octagonal number.

It is an amenable number.

1308880147969 is a deficient number, since it is larger than the sum of its proper divisors (2906633538).

1308880147969 is an frugal number, since it uses more digits than its factorization.

1308880147969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072 (or 2536 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 64.

Multiplying 1308880147969 by its sum of digits (64), we get a square (83768329470016 = 9152504²).

It can be divided in two parts, 1308880 and 147969, that added together give a square (1456849 = 1207²).

The spelling of 1308880147969 in words is "one trillion, three hundred eight billion, eight hundred eighty million, one hundred forty-seven thousand, nine hundred sixty-nine".