1144652161 has 4 divisors (see below), whose sum is σ = 1145869524. Its totient is φ = 1143434800.

The previous prime is 1144652141. The next prime is 1144652167. The reversal of 1144652161 is 1612564411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1612564411 = 941 ⋅1713671.

It can be written as a sum of positive squares in 2 ways, for example, as 698597761 + 446054400 = 26431^2 + 21120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144652161 - 2¹⁷ = 1144521089 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144652167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607270 + ... + 609151.

It is an arithmetic number, because the mean of its divisors is an integer number (286467381).

Almost surely, 2^1144652161 is an apocalyptic number.

It is an amenable number.

1144652161 is a deficient number, since it is larger than the sum of its proper divisors (1217363).

1144652161 is an equidigital number, since it uses as much as digits as its factorization.

1144652161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217362.

The product of its digits is 5760, while the sum is 31.

The square root of 1144652161 is about 33832.7084490734. The cubic root of 1144652161 is about 1046.0630075001.

The spelling of 1144652161 in words is "one billion, one hundred forty-four million, six hundred fifty-two thousand, one hundred sixty-one".