1018185449 has 2 divisors, whose sum is σ = 1018185450. Its totient is φ = 1018185448.

The previous prime is 1018185409. The next prime is 1018185451. The reversal of 1018185449 is 9445818101.

1018185449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 833361424 + 184824025 = 28868^2 + 13595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1018185449 - 2⁸ = 1018185193 is a prime.

Together with 1018185451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1018185409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509092724 + 509092725.

It is an arithmetic number, because the mean of its divisors is an integer number (509092725).

Almost surely, 2^1018185449 is an apocalyptic number.

It is an amenable number.

1018185449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018185449 is an equidigital number, since it uses as much as digits as its factorization.

1018185449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 1018185449 is about 31909.0183020412. The cubic root of 1018185449 is about 1006.0254375164.

The spelling of 1018185449 in words is "one billion, eighteen million, one hundred eighty-five thousand, four hundred forty-nine".