1622438394 has 8 divisors (see below), whose sum is σ = 3244876800. Its totient is φ = 540812796.

The previous prime is 1622438369. The next prime is 1622438399. The reversal of 1622438394 is 4938342261.

1622438394 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1622438394 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1622438399) 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, 135203194 + ... + 135203205.

It is an arithmetic number, because the mean of its divisors is an integer number (405609600).

Almost surely, 2^1622438394 is an apocalyptic number.

1622438394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1622438394 is a wasteful number, since it uses less digits than its factorization.

1622438394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270406404.

The product of its digits is 248832, while the sum is 42.

The square root of 1622438394 is about 40279.5033981304. The cubic root of 1622438394 is about 1175.0492555782.

The spelling of 1622438394 in words is "one billion, six hundred twenty-two million, four hundred thirty-eight thousand, three hundred ninety-four".