1173881 has 2 divisors, whose sum is σ = 1173882. Its totient is φ = 1173880.

The previous prime is 1173853. The next prime is 1173883. The reversal of 1173881 is 1883711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 434281 = 860^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173881 - 2¹⁸ = 911737 is a prime.

It is a super-2 number, since 2×1173881² = 2755993204322, which contains 22 as substring.

Together with 1173883, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1173883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586940 + 586941.

It is an arithmetic number, because the mean of its divisors is an integer number (586941).

2^1173881 is an apocalyptic number.

It is an amenable number.

1173881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173881 is an equidigital number, since it uses as much as digits as its factorization.

1173881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 29.

The square root of 1173881 is about 1083.4578902754. The cubic root of 1173881 is about 105.4892062361.

The spelling of 1173881 in words is "one million, one hundred seventy-three thousand, eight hundred eighty-one".