1161451106 has 4 divisors (see below), whose sum is σ = 1742176662. Its totient is φ = 580725552.

The previous prime is 1161451087. The next prime is 1161451141. The reversal of 1161451106 is 6011541611.

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., 1012830625 + 148620481 = 31825^2 + 12191^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290362775 + ... + 290362778.

Almost surely, 2^1161451106 is an apocalyptic number.

1161451106 is a deficient number, since it is larger than the sum of its proper divisors (580725556).

1161451106 is an equidigital number, since it uses as much as digits as its factorization.

1161451106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580725555.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1161451106 is about 34080.0690433573. The cubic root of 1161451106 is about 1051.1555248551.

Adding to 1161451106 its reverse (6011541611), we get a palindrome (7172992717).

The spelling of 1161451106 in words is "one billion, one hundred sixty-one million, four hundred fifty-one thousand, one hundred six".