18474077 has 2 divisors, whose sum is σ = 18474078. Its totient is φ = 18474076.

The previous prime is 18474059. The next prime is 18474089. The reversal of 18474077 is 77047481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9647236 + 8826841 = 3106^2 + 2971^2 .

It is a cyclic number.

It is not a de Polignac number, because 18474077 - 2¹⁰ = 18473053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18474077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18474007) 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, 9237038 + 9237039.

It is an arithmetic number, because the mean of its divisors is an integer number (9237039).

Almost surely, 2^18474077 is an apocalyptic number.

It is an amenable number.

18474077 is a deficient number, since it is larger than the sum of its proper divisors (1).

18474077 is an equidigital number, since it uses as much as digits as its factorization.

18474077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 18474077 is about 4298.1480895846. The cubic root of 18474077 is about 264.3550329284.

The spelling of 18474077 in words is "eighteen million, four hundred seventy-four thousand, seventy-seven".