1438212023 has 4 divisors (see below), whose sum is σ = 1452451848. Its totient is φ = 1423972200.

The previous prime is 1438212007. The next prime is 1438212029. The reversal of 1438212023 is 3202128341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3202128341 = 101 ⋅31704241.

It is a cyclic number.

It is not a de Polignac number, because 1438212023 - 2⁴ = 1438212007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1438211983 and 1438212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438212029) 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, 7119761 + ... + 7119962.

It is an arithmetic number, because the mean of its divisors is an integer number (363112962).

Almost surely, 2^1438212023 is an apocalyptic number.

1438212023 is a deficient number, since it is larger than the sum of its proper divisors (14239825).

1438212023 is a wasteful number, since it uses less digits than its factorization.

1438212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14239824.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1438212023 is about 37923.7659390520. The cubic root of 1438212023 is about 1128.7756658693.

The spelling of 1438212023 in words is "one billion, four hundred thirty-eight million, two hundred twelve thousand, twenty-three".