1438326213 has 4 divisors (see below), whose sum is σ = 1917768288. Its totient is φ = 958884140.

The previous prime is 1438326209. The next prime is 1438326247. The reversal of 1438326213 is 3126238341.

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 1438326213 - 2² = 1438326209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438326203) 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, 239721033 + ... + 239721038.

It is an arithmetic number, because the mean of its divisors is an integer number (479442072).

Almost surely, 2^1438326213 is an apocalyptic number.

It is an amenable number.

1438326213 is a deficient number, since it is larger than the sum of its proper divisors (479442075).

1438326213 is an equidigital number, since it uses as much as digits as its factorization.

1438326213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479442074.

The product of its digits is 20736, while the sum is 33.

The square root of 1438326213 is about 37925.2714294835. The cubic root of 1438326213 is about 1128.8055389524.

The spelling of 1438326213 in words is "one billion, four hundred thirty-eight million, three hundred twenty-six thousand, two hundred thirteen".