1193481961156 has 9 divisors (see below), whose sum is σ = 2088597255661. Its totient is φ = 596739888112.

The previous prime is 1193481961151. The next prime is 1193481961211. The reversal of 1193481961156 is 6511691843911.

The square root of 1193481961156 is 1092466.

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., 1926332100 + 1191555629056 = 43890^2 + 1091584^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1193481961097 and 1193481961106.

It is not an unprimeable number, because it can be changed into a prime (1193481961151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1911816 + ... + 2458048.

Almost surely, 2^{1193481961156} is an apocalyptic number.

1193481961156 is the 1092466-th square number.

It is an amenable number.

1193481961156 is a deficient number, since it is larger than the sum of its proper divisors (895115294505).

1193481961156 is an frugal number, since it uses more digits than its factorization.

1193481961156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092470 (or 546235 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 55.

The spelling of 1193481961156 in words is "one trillion, one hundred ninety-three billion, four hundred eighty-one million, nine hundred sixty-one thousand, one hundred fifty-six".