18376361 has 2 divisors, whose sum is σ = 18376362. Its totient is φ = 18376360.

The previous prime is 18376339. The next prime is 18376367. The reversal of 18376361 is 16367381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14295961 + 4080400 = 3781^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 18376361 - 2¹⁴ = 18359977 is a prime.

It is not a weakly prime, because it can be changed into another prime (18376367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9188180 + 9188181.

It is an arithmetic number, because the mean of its divisors is an integer number (9188181).

Almost surely, 2^18376361 is an apocalyptic number.

It is an amenable number.

18376361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18376361 is an equidigital number, since it uses as much as digits as its factorization.

18376361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 18376361 is about 4286.7657971949. The cubic root of 18376361 is about 263.8881192976. Note that the first 3 decimals are identical.

The spelling of 18376361 in words is "eighteen million, three hundred seventy-six thousand, three hundred sixty-one".