1189146797 has 2 divisors, whose sum is σ = 1189146798. Its totient is φ = 1189146796.

The previous prime is 1189146781. The next prime is 1189146809. The reversal of 1189146797 is 7976419811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638118121 + 551028676 = 25261^2 + 23474^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189146797 - 2⁴ = 1189146781 is a prime.

It is a super-5 number, since 5×1189146797⁵ (a number of 47 digits) contains 55555 as substring. Note that it is a super-d number also for d = 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189146767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594573398 + 594573399.

It is an arithmetic number, because the mean of its divisors is an integer number (594573399).

Almost surely, 2^1189146797 is an apocalyptic number.

It is an amenable number.

1189146797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189146797 is an equidigital number, since it uses as much as digits as its factorization.

1189146797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 53.

The square root of 1189146797 is about 34484.0078442167. The cubic root of 1189146797 is about 1059.4451816460.

The spelling of 1189146797 in words is "one billion, one hundred eighty-nine million, one hundred forty-six thousand, seven hundred ninety-seven".