18074929 has 2 divisors, whose sum is σ = 18074930. Its totient is φ = 18074928.

The previous prime is 18074923. The next prime is 18074933. The reversal of 18074929 is 92947081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14615329 + 3459600 = 3823^2 + 1860^2 .

It is an emirp because it is prime and its reverse (92947081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18074929 - 2⁵ = 18074897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18074891 and 18074900.

It is not a weakly prime, because it can be changed into another prime (18074923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9037464 + 9037465.

It is an arithmetic number, because the mean of its divisors is an integer number (9037465).

Almost surely, 2^18074929 is an apocalyptic number.

It is an amenable number.

18074929 is a deficient number, since it is larger than the sum of its proper divisors (1).

18074929 is an equidigital number, since it uses as much as digits as its factorization.

18074929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 18074929 is about 4251.4619838357. The cubic root of 18074929 is about 262.4372832784.

The spelling of 18074929 in words is "eighteen million, seventy-four thousand, nine hundred twenty-nine".