18725034 has 16 divisors (see below), whose sum is σ = 38462688. Its totient is φ = 6072912.

The previous prime is 18725033. The next prime is 18725099. The reversal of 18725034 is 43052781.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18724992 and 18725010.

It is not an unprimeable number, because it can be changed into a prime (18725033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41952 + ... + 42395.

It is an arithmetic number, because the mean of its divisors is an integer number (2403918).

Almost surely, 2^18725034 is an apocalyptic number.

18725034 is an abundant number, since it is smaller than the sum of its proper divisors (19737654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18725034 is a wasteful number, since it uses less digits than its factorization.

18725034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84389.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 18725034 is about 4327.2432332837. The cubic root of 18725034 is about 265.5466773277.

The spelling of 18725034 in words is "eighteen million, seven hundred twenty-five thousand, thirty-four".