18530073 has 32 divisors (see below), whose sum is σ = 29635200. Its totient is φ = 11404800.

The previous prime is 18530069. The next prime is 18530107. The reversal of 18530073 is 37003581.

It is not a de Polignac number, because 18530073 - 2² = 18530069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18530023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20593 + ... + 21473.

It is an arithmetic number, because the mean of its divisors is an integer number (926100).

Almost surely, 2^18530073 is an apocalyptic number.

It is an amenable number.

18530073 is a deficient number, since it is larger than the sum of its proper divisors (11105127).

18530073 is a wasteful number, since it uses less digits than its factorization.

18530073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 18530073 is about 4304.6571292032. The cubic root of 18530073 is about 264.6218553427.

The spelling of 18530073 in words is "eighteen million, five hundred thirty thousand, seventy-three".