1192007587681 has 9 divisors (see below), whose sum is σ = 1266269991571. Its totient is φ = 1121872025632.

The previous prime is 1192007587679. The next prime is 1192007587697. The reversal of 1192007587681 is 1867857002911.

The square root of 1192007587681 is 1091791.

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., 928033589025 + 263973998656 = 963345^2 + 513784^2 .

It is not a de Polignac number, because 1192007587681 - 2¹ = 1192007587679 is a prime.

It is a super-2 number, since 2×1192007587681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1192007587621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18528336 + ... + 18592558.

Almost surely, 2^{1192007587681} is an apocalyptic number.

1192007587681 is the 1091791-st square number.

1192007587681 is the 545896-th centered octagonal number.

It is an amenable number.

1192007587681 is a deficient number, since it is larger than the sum of its proper divisors (74262403890).

1192007587681 is an frugal number, since it uses more digits than its factorization.

1192007587681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128480 (or 64240 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 55.

The spelling of 1192007587681 in words is "one trillion, one hundred ninety-two billion, seven million, five hundred eighty-seven thousand, six hundred eighty-one".