1130235561 has 96 divisors (see below), whose sum is σ = 2085527808. Its totient is φ = 573972480.

The previous prime is 1130235553. The next prime is 1130235569. The reversal of 1130235561 is 1655320311.

1130235561 is a `hidden beast` number, since 1 + 1 + 302 + 355 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1130235553) and next prime (1130235569).

It is not a de Polignac number, because 1130235561 - 2³ = 1130235553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1130235569) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3256990 + ... + 3257336.

It is an arithmetic number, because the mean of its divisors is an integer number (21724248).

Almost surely, 2^1130235561 is an apocalyptic number.

It is an amenable number.

1130235561 is a deficient number, since it is larger than the sum of its proper divisors (955292247).

1130235561 is a wasteful number, since it uses less digits than its factorization.

1130235561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1130235561 is about 33618.9762039239. The cubic root of 1130235561 is about 1041.6528085993.

Adding to 1130235561 its reverse (1655320311), we get a palindrome (2785555872).

The spelling of 1130235561 in words is "one billion, one hundred thirty million, two hundred thirty-five thousand, five hundred sixty-one".