1150641161 has 4 divisors (see below), whose sum is σ = 1151724672. Its totient is φ = 1149557652.

The previous prime is 1150641143. The next prime is 1150641199. The reversal of 1150641161 is 1611460511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1611460511 = 24841 ⋅64871.

It is a cyclic number.

It is not a de Polignac number, because 1150641161 - 2¹⁰ = 1150640137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1150641161.

It is not an unprimeable number, because it can be changed into a prime (1150641101) 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 3 ways as a sum of consecutive naturals, for example, 540161 + ... + 542286.

It is an arithmetic number, because the mean of its divisors is an integer number (287931168).

Almost surely, 2^1150641161 is an apocalyptic number.

It is an amenable number.

1150641161 is a deficient number, since it is larger than the sum of its proper divisors (1083511).

1150641161 is a wasteful number, since it uses less digits than its factorization.

1150641161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083510.

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

The square root of 1150641161 is about 33921.1020015565. The cubic root of 1150641161 is about 1047.8842235722.

The spelling of 1150641161 in words is "one billion, one hundred fifty million, six hundred forty-one thousand, one hundred sixty-one".