1166897959 has 2 divisors, whose sum is σ = 1166897960. Its totient is φ = 1166897958.

The previous prime is 1166897933. The next prime is 1166897981. The reversal of 1166897959 is 9597986611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166897959 - 2¹¹ = 1166895911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166897897 and 1166897906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166897989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583448979 + 583448980.

It is an arithmetic number, because the mean of its divisors is an integer number (583448980).

Almost surely, 2^1166897959 is an apocalyptic number.

1166897959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166897959 is an equidigital number, since it uses as much as digits as its factorization.

1166897959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 61.

The square root of 1166897959 is about 34159.8881584820. Note that the first 3 decimals coincide. The cubic root of 1166897959 is about 1052.7961628959.

The spelling of 1166897959 in words is "one billion, one hundred sixty-six million, eight hundred ninety-seven thousand, nine hundred fifty-nine".