1130155161 has 4 divisors (see below), whose sum is σ = 1506873552. Its totient is φ = 753436772.

The previous prime is 1130155157. The next prime is 1130155171. The reversal of 1130155161 is 1615510311.

It is a happy number.

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 1130155161 - 2² = 1130155157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1130155151) 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, 188359191 + ... + 188359196.

It is an arithmetic number, because the mean of its divisors is an integer number (376718388).

Almost surely, 2^1130155161 is an apocalyptic number.

It is an amenable number.

1130155161 is a deficient number, since it is larger than the sum of its proper divisors (376718391).

1130155161 is an equidigital number, since it uses as much as digits as its factorization.

1130155161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376718390.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 1130155161 is about 33617.7804294097. The cubic root of 1130155161 is about 1041.6281084764.

Adding to 1130155161 its reverse (1615510311), we get a palindrome (2745665472).

The spelling of 1130155161 in words is "one billion, one hundred thirty million, one hundred fifty-five thousand, one hundred sixty-one".