1147148561 has 8 divisors (see below), whose sum is σ = 1250276160. Its totient is φ = 1046147472.

The previous prime is 1147148549. The next prime is 1147148573. The reversal of 1147148561 is 1658417411.

It is an interprime number because it is at equal distance from previous prime (1147148549) and next prime (1147148573).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1147148561 - 2¹⁰ = 1147147537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1147148581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530501 + ... + 532658.

It is an arithmetic number, because the mean of its divisors is an integer number (156284520).

Almost surely, 2^1147148561 is an apocalyptic number.

It is an amenable number.

1147148561 is a deficient number, since it is larger than the sum of its proper divisors (103127599).

1147148561 is a wasteful number, since it uses less digits than its factorization.

1147148561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063255.

The product of its digits is 26880, while the sum is 38.

The square root of 1147148561 is about 33869.5816478444. The cubic root of 1147148561 is about 1046.8229168308.

The spelling of 1147148561 in words is "one billion, one hundred forty-seven million, one hundred forty-eight thousand, five hundred sixty-one".