1130823561 has 16 divisors (see below), whose sum is σ = 1824522624. Its totient is φ = 608173824.

The previous prime is 1130823553. The next prime is 1130823599. The reversal of 1130823561 is 1653280311.

It is not a de Polignac number, because 1130823561 - 2³ = 1130823553 is a prime.

It is a super-2 number, since 2×1130823561² = 2557523852225441442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1130823511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1583430 + ... + 1584143.

It is an arithmetic number, because the mean of its divisors is an integer number (114032664).

Almost surely, 2^1130823561 is an apocalyptic number.

It is an amenable number.

1130823561 is a deficient number, since it is larger than the sum of its proper divisors (693699063).

1130823561 is a wasteful number, since it uses less digits than its factorization.

1130823561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167600.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1130823561 is about 33627.7201278945. The cubic root of 1130823561 is about 1041.8334156892.

The spelling of 1130823561 in words is "one billion, one hundred thirty million, eight hundred twenty-three thousand, five hundred sixty-one".