18061319 has 2 divisors, whose sum is σ = 18061320. Its totient is φ = 18061318.

The previous prime is 18061297. The next prime is 18061331. The reversal of 18061319 is 91316081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18061319 - 2¹² = 18057223 is a prime.

It is a super-2 number, since 2×18061319² = 652422488039522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18061291 and 18061300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18061349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9030659 + 9030660.

It is an arithmetic number, because the mean of its divisors is an integer number (9030660).

Almost surely, 2^18061319 is an apocalyptic number.

18061319 is a deficient number, since it is larger than the sum of its proper divisors (1).

18061319 is an equidigital number, since it uses as much as digits as its factorization.

18061319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 18061319 is about 4249.8610565523. The cubic root of 18061319 is about 262.3713970207.

It can be divided in two parts, 1806 and 1319, that added together give a 5-th power (3125 = 5⁵).

The spelling of 18061319 in words is "eighteen million, sixty-one thousand, three hundred nineteen".