1188161267 has 2 divisors, whose sum is σ = 1188161268. Its totient is φ = 1188161266.

The previous prime is 1188161243. The next prime is 1188161281. The reversal of 1188161267 is 7621618811.

It is a strong prime.

It is an emirp because it is prime and its reverse (7621618811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1188161267 - 2⁶ = 1188161203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1188161207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594080633 + 594080634.

It is an arithmetic number, because the mean of its divisors is an integer number (594080634).

Almost surely, 2^1188161267 is an apocalyptic number.

1188161267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188161267 is an equidigital number, since it uses as much as digits as its factorization.

1188161267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 41.

The square root of 1188161267 is about 34469.7152149535. The cubic root of 1188161267 is about 1059.1524217195.

The spelling of 1188161267 in words is "one billion, one hundred eighty-eight million, one hundred sixty-one thousand, two hundred sixty-seven".