1189606057 has 2 divisors, whose sum is σ = 1189606058. Its totient is φ = 1189606056.

The previous prime is 1189606039. The next prime is 1189606097. The reversal of 1189606057 is 7506069811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931714576 + 257891481 = 30524^2 + 16059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1189606057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1189606027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594803028 + 594803029.

It is an arithmetic number, because the mean of its divisors is an integer number (594803029).

Almost surely, 2^1189606057 is an apocalyptic number.

It is an amenable number.

1189606057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189606057 is an equidigital number, since it uses as much as digits as its factorization.

1189606057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 1189606057 is about 34490.6662301557. Note that the first 3 decimals coincide. The cubic root of 1189606057 is about 1059.5815534185.

The spelling of 1189606057 in words is "one billion, one hundred eighty-nine million, six hundred six thousand, fifty-seven".