1157489066 has 4 divisors (see below), whose sum is σ = 1736233602. Its totient is φ = 578744532.

The previous prime is 1157489051. The next prime is 1157489071. The reversal of 1157489066 is 6609847511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6609847511 = 83 ⋅79636717.

It can be written as a sum of positive squares in only one way, i.e., 851414041 + 306075025 = 29179^2 + 17495^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1157489066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289372265 + ... + 289372268.

Almost surely, 2^1157489066 is an apocalyptic number.

1157489066 is a deficient number, since it is larger than the sum of its proper divisors (578744536).

1157489066 is an equidigital number, since it uses as much as digits as its factorization.

1157489066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578744535.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1157489066 is about 34021.8909821309. The cubic root of 1157489066 is about 1049.9588996762.

The spelling of 1157489066 in words is "one billion, one hundred fifty-seven million, four hundred eighty-nine thousand, sixty-six".