1089057191 has 2 divisors, whose sum is σ = 1089057192. Its totient is φ = 1089057190.

The previous prime is 1089057169. The next prime is 1089057227. The reversal of 1089057191 is 1917509801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1089057191 - 2⁶ = 1089057127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089057491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544528595 + 544528596.

It is an arithmetic number, because the mean of its divisors is an integer number (544528596).

Almost surely, 2^1089057191 is an apocalyptic number.

1089057191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089057191 is an equidigital number, since it uses as much as digits as its factorization.

1089057191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 1089057191 is about 33000.8665189264. The cubic root of 1089057191 is about 1028.8456578047.

The spelling of 1089057191 in words is "one billion, eighty-nine million, fifty-seven thousand, one hundred ninety-one".