1130156645 has 4 divisors (see below), whose sum is σ = 1356187980. Its totient is φ = 904125312.

The previous prime is 1130156611. The next prime is 1130156647. The reversal of 1130156645 is 5466510311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5466510311 = 19 ⋅287711069.

It can be written as a sum of positive squares in 2 ways, for example, as 648924676 + 481231969 = 25474^2 + 21937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130156645 - 2¹⁸ = 1129894501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130156647) 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, 113015660 + ... + 113015669.

It is an arithmetic number, because the mean of its divisors is an integer number (339046995).

Almost surely, 2^1130156645 is an apocalyptic number.

It is an amenable number.

1130156645 is a deficient number, since it is larger than the sum of its proper divisors (226031335).

1130156645 is an equidigital number, since it uses as much as digits as its factorization.

1130156645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226031334.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1130156645 is about 33617.8025010559. The cubic root of 1130156645 is about 1041.6285643947.

Adding to 1130156645 its reverse (5466510311), we get a palindrome (6596666956).

The spelling of 1130156645 in words is "one billion, one hundred thirty million, one hundred fifty-six thousand, six hundred forty-five".