1189215728473 has 2 divisors, whose sum is σ = 1189215728474. Its totient is φ = 1189215728472.

The previous prime is 1189215728461. The next prime is 1189215728497. The reversal of 1189215728473 is 3748275129811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 875287482624 + 313928245849 = 935568^2 + 560293^2 .

It is an emirp because it is prime and its reverse (3748275129811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1189215728473 - 2³³ = 1180625793881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1189215728773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594607864236 + 594607864237.

It is an arithmetic number, because the mean of its divisors is an integer number (594607864237).

Almost surely, 2^{1189215728473} is an apocalyptic number.

It is an amenable number.

1189215728473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189215728473 is an equidigital number, since it uses as much as digits as its factorization.

1189215728473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 58.

The spelling of 1189215728473 in words is "one trillion, one hundred eighty-nine billion, two hundred fifteen million, seven hundred twenty-eight thousand, four hundred seventy-three".