1178403923 has 2 divisors, whose sum is σ = 1178403924. Its totient is φ = 1178403922.

The previous prime is 1178403869. The next prime is 1178403929. The reversal of 1178403923 is 3293048711.

It is a strong prime.

It is an emirp because it is prime and its reverse (3293048711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1178403923 - 2¹⁶ = 1178338387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1178403929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589201961 + 589201962.

It is an arithmetic number, because the mean of its divisors is an integer number (589201962).

Almost surely, 2^1178403923 is an apocalyptic number.

1178403923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178403923 is an equidigital number, since it uses as much as digits as its factorization.

1178403923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1178403923 is about 34327.8884145238. Note that the first 3 decimals coincide. The cubic root of 1178403923 is about 1056.2451469590.

The spelling of 1178403923 in words is "one billion, one hundred seventy-eight million, four hundred three thousand, nine hundred twenty-three".