1161045154 has 8 divisors (see below), whose sum is σ = 1750591980. Its totient is φ = 577514496.

The previous prime is 1161045121. The next prime is 1161045161. The reversal of 1161045154 is 4515401611.

It can be written as a sum of positive squares in 2 ways, for example, as 1019077929 + 141967225 = 31923^2 + 11915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503559 + ... + 1504330.

Almost surely, 2^1161045154 is an apocalyptic number.

1161045154 is a deficient number, since it is larger than the sum of its proper divisors (589546826).

1161045154 is a wasteful number, since it uses less digits than its factorization.

1161045154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008084.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1161045154 is about 34074.1126663630. The cubic root of 1161045154 is about 1051.0330434722.

Adding to 1161045154 its reverse (4515401611), we get a palindrome (5676446765).

The spelling of 1161045154 in words is "one billion, one hundred sixty-one million, forty-five thousand, one hundred fifty-four".