1622105999 has 4 divisors (see below), whose sum is σ = 1622271000. Its totient is φ = 1621941000.

The previous prime is 1622105963. The next prime is 1622106007. The reversal of 1622105999 is 9995012261.

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 1622105999 - 2⁸ = 1622105743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622105399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66752 + ... + 87749.

It is an arithmetic number, because the mean of its divisors is an integer number (405567750).

Almost surely, 2^1622105999 is an apocalyptic number.

1622105999 is a deficient number, since it is larger than the sum of its proper divisors (165001).

1622105999 is a wasteful number, since it uses less digits than its factorization.

1622105999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165000.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 1622105999 is about 40275.3770807922. The cubic root of 1622105999 is about 1174.9690045242.

The spelling of 1622105999 in words is "one billion, six hundred twenty-two million, one hundred five thousand, nine hundred ninety-nine".