1152626161 has 4 divisors (see below), whose sum is σ = 1152861552. Its totient is φ = 1152390772.

The previous prime is 1152626147. The next prime is 1152626173. The reversal of 1152626161 is 1616262511.

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.

It is a cyclic number.

It is not a de Polignac number, because 1152626161 - 2²⁵ = 1119071729 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 (1152621161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110191 + ... + 120196.

It is an arithmetic number, because the mean of its divisors is an integer number (288215388).

Almost surely, 2^1152626161 is an apocalyptic number.

It is an amenable number.

1152626161 is a deficient number, since it is larger than the sum of its proper divisors (235391).

1152626161 is an equidigital number, since it uses as much as digits as its factorization.

1152626161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235390.

The product of its digits is 4320, while the sum is 31.

The square root of 1152626161 is about 33950.3484665474. The cubic root of 1152626161 is about 1048.4864545381.

Adding to 1152626161 its reverse (1616262511), we get a palindrome (2768888672).

The spelling of 1152626161 in words is "one billion, one hundred fifty-two million, six hundred twenty-six thousand, one hundred sixty-one".