1189767493 has 2 divisors, whose sum is σ = 1189767494. Its totient is φ = 1189767492.

The previous prime is 1189767463. The next prime is 1189767497. The reversal of 1189767493 is 3947679811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612711009 + 577056484 = 24753^2 + 24022^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189767493 - 2⁵ = 1189767461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189767497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594883746 + 594883747.

It is an arithmetic number, because the mean of its divisors is an integer number (594883747).

Almost surely, 2^1189767493 is an apocalyptic number.

It is an amenable number.

1189767493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189767493 is an equidigital number, since it uses as much as digits as its factorization.

1189767493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 1189767493 is about 34493.0064360879. The cubic root of 1189767493 is about 1059.6294815735.

The spelling of 1189767493 in words is "one billion, one hundred eighty-nine million, seven hundred sixty-seven thousand, four hundred ninety-three".