1171667461 has 2 divisors, whose sum is σ = 1171667462. Its totient is φ = 1171667460.

The previous prime is 1171667459. The next prime is 1171667477. The reversal of 1171667461 is 1647661711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 950550561 + 221116900 = 30831^2 + 14870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171667461 - 2¹ = 1171667459 is a prime.

Together with 1171667459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171667401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585833730 + 585833731.

It is an arithmetic number, because the mean of its divisors is an integer number (585833731).

Almost surely, 2^1171667461 is an apocalyptic number.

It is an amenable number.

1171667461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171667461 is an equidigital number, since it uses as much as digits as its factorization.

1171667461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 1171667461 is about 34229.6284087339. The cubic root of 1171667461 is about 1054.2285896693.

The spelling of 1171667461 in words is "one billion, one hundred seventy-one million, six hundred sixty-seven thousand, four hundred sixty-one".