1193736989 has 2 divisors, whose sum is σ = 1193736990. Its totient is φ = 1193736988.

The previous prime is 1193736941. The next prime is 1193737003. The reversal of 1193736989 is 9896373911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 704000089 + 489736900 = 26533^2 + 22130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1193736989 is a prime.

It is a super-2 number, since 2×1193736989² = 2850015997813572242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1193732989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 596868494 + 596868495.

It is an arithmetic number, because the mean of its divisors is an integer number (596868495).

Almost surely, 2^1193736989 is an apocalyptic number.

It is an amenable number.

1193736989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1193736989 is an equidigital number, since it uses as much as digits as its factorization.

1193736989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 56.

The square root of 1193736989 is about 34550.4991136163. The cubic root of 1193736989 is about 1060.8066095606.

The spelling of 1193736989 in words is "one billion, one hundred ninety-three million, seven hundred thirty-six thousand, nine hundred eighty-nine".