20438119 has 4 divisors (see below), whose sum is σ = 22010296. Its totient is φ = 18865944.

The previous prime is 20438107. The next prime is 20438123. The reversal of 20438119 is 91183402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20438119 - 2⁵ = 20438087 is a prime.

It is a super-2 number, since 2×20438119² = 835433416516322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20438179) 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, 786069 + ... + 786094.

It is an arithmetic number, because the mean of its divisors is an integer number (5502574).

Almost surely, 2^20438119 is an apocalyptic number.

20438119 is a deficient number, since it is larger than the sum of its proper divisors (1572177).

20438119 is a wasteful number, since it uses less digits than its factorization.

20438119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572176.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20438119 is about 4520.8537910443. The cubic root of 20438119 is about 273.4095254908.

The spelling of 20438119 in words is "twenty million, four hundred thirty-eight thousand, one hundred nineteen".