18438053 has 4 divisors (see below), whose sum is σ = 18830400. Its totient is φ = 18045708.

The previous prime is 18438029. The next prime is 18438059. The reversal of 18438053 is 35083481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18438053 - 2¹⁶ = 18372517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18438059) 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 3 ways as a sum of consecutive naturals, for example, 196103 + ... + 196196.

It is an arithmetic number, because the mean of its divisors is an integer number (4707600).

Almost surely, 2^18438053 is an apocalyptic number.

It is an amenable number.

18438053 is a deficient number, since it is larger than the sum of its proper divisors (392347).

18438053 is an equidigital number, since it uses as much as digits as its factorization.

18438053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392346.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18438053 is about 4293.9554026562. The cubic root of 18438053 is about 264.1830924958.

The spelling of 18438053 in words is "eighteen million, four hundred thirty-eight thousand, fifty-three".