18954038 has 4 divisors (see below), whose sum is σ = 28431060. Its totient is φ = 9477018.

The previous prime is 18954037. The next prime is 18954041. The reversal of 18954038 is 83045981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83045981 = 59 ⋅1407559.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18953992 and 18954010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18954037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4738508 + ... + 4738511.

It is an arithmetic number, because the mean of its divisors is an integer number (7107765).

Almost surely, 2^18954038 is an apocalyptic number.

18954038 is a deficient number, since it is larger than the sum of its proper divisors (9477022).

18954038 is an equidigital number, since it uses as much as digits as its factorization.

18954038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9477021.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 18954038 is about 4353.6235482641. The cubic root of 18954038 is about 266.6248243377.

The spelling of 18954038 in words is "eighteen million, nine hundred fifty-four thousand, thirty-eight".