1622438408 has 16 divisors (see below), whose sum is σ = 3146971500. Its totient is φ = 783246016.

The previous prime is 1622438399. The next prime is 1622438431. The reversal of 1622438408 is 8048342261.

It can be written as a sum of positive squares in 2 ways, for example, as 1447193764 + 175244644 = 38042^2 + 13238^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3496403 + ... + 3496866.

Almost surely, 2^1622438408 is an apocalyptic number.

It is an amenable number.

1622438408 is a deficient number, since it is larger than the sum of its proper divisors (1524533092).

1622438408 is a wasteful number, since it uses less digits than its factorization.

1622438408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993304 (or 6993300 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 1622438408 is about 40279.5035719161. The cubic root of 1622438408 is about 1175.0492589580.

The spelling of 1622438408 in words is "one billion, six hundred twenty-two million, four hundred thirty-eight thousand, four hundred eight".