18018058 has 8 divisors (see below), whose sum is σ = 27470340. Its totient is φ = 8861280.

The previous prime is 18018053. The next prime is 18018059. The reversal of 18018058 is 85081081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11377129 + 6640929 = 3373^2 + 2577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×18018058³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18018053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73723 + ... + 73966.

Almost surely, 2^18018058 is an apocalyptic number.

18018058 is a deficient number, since it is larger than the sum of its proper divisors (9452282).

18018058 is a wasteful number, since it uses less digits than its factorization.

18018058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147752.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 18018058 is about 4244.7683093427. The cubic root of 18018058 is about 262.1617496634.

The spelling of 18018058 in words is "eighteen million, eighteen thousand, fifty-eight".