1149266161 has 8 divisors (see below), whose sum is σ = 1166158440. Its totient is φ = 1132492032.

The previous prime is 1149266159. The next prime is 1149266189. The reversal of 1149266161 is 1616629411.

It can be written as a sum of positive squares in 4 ways, for example, as 407030625 + 742235536 = 20175^2 + 27244^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1149266161 - 2¹ = 1149266159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1149266161.

It is not an unprimeable number, because it can be changed into a prime (1149266761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9846 + ... + 48943.

It is an arithmetic number, because the mean of its divisors is an integer number (145769805).

Almost surely, 2^1149266161 is an apocalyptic number.

It is an amenable number.

1149266161 is a deficient number, since it is larger than the sum of its proper divisors (16892279).

1149266161 is a wasteful number, since it uses less digits than its factorization.

1149266161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59075.

The product of its digits is 15552, while the sum is 37.

The square root of 1149266161 is about 33900.8283232136. The cubic root of 1149266161 is about 1047.4666548967.

The spelling of 1149266161 in words is "one billion, one hundred forty-nine million, two hundred sixty-six thousand, one hundred sixty-one".