1161245066 has 4 divisors (see below), whose sum is σ = 1741867602. Its totient is φ = 580622532.

The previous prime is 1161245053. The next prime is 1161245069. The reversal of 1161245066 is 6605421611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1131313225 + 29931841 = 33635^2 + 5471^2 .

It is not an unprimeable number, because it can be changed into a prime (1161245069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290311265 + ... + 290311268.

Almost surely, 2^1161245066 is an apocalyptic number.

1161245066 is a deficient number, since it is larger than the sum of its proper divisors (580622536).

1161245066 is an equidigital number, since it uses as much as digits as its factorization.

1161245066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580622535.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1161245066 is about 34077.0460280817. The cubic root of 1161245066 is about 1051.0933632794.

Adding to 1161245066 its reverse (6605421611), we get a palindrome (7766666677).

The spelling of 1161245066 in words is "one billion, one hundred sixty-one million, two hundred forty-five thousand, sixty-six".