1183012961 has 8 divisors (see below), whose sum is σ = 1291467240. Its totient is φ = 1077052032.

The previous prime is 1183012939. The next prime is 1183013003. The reversal of 1183012961 is 1692103811.

It can be written as a sum of positive squares in 4 ways, for example, as 346704400 + 836308561 = 18620^2 + 28919^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1183012961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1183012261) 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, 622346 + ... + 624243.

It is an arithmetic number, because the mean of its divisors is an integer number (161433405).

Almost surely, 2^1183012961 is an apocalyptic number.

It is an amenable number.

1183012961 is a deficient number, since it is larger than the sum of its proper divisors (108454279).

1183012961 is a wasteful number, since it uses less digits than its factorization.

1183012961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246675.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1183012961 is about 34394.9554586134. The cubic root of 1183012961 is about 1057.6204367784.

The spelling of 1183012961 in words is "one billion, one hundred eighty-three million, twelve thousand, nine hundred sixty-one".