1622105988 has 12 divisors (see below), whose sum is σ = 3784914000. Its totient is φ = 540701992.

The previous prime is 1622105963. The next prime is 1622106007. The reversal of 1622105988 is 8895012261.

It is a happy number.

1622105988 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1622105988² = 5262455672610912288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67587738 + ... + 67587761.

It is an arithmetic number, because the mean of its divisors is an integer number (315409500).

Almost surely, 2^1622105988 is an apocalyptic number.

It is an amenable number.

1622105988 is an abundant number, since it is smaller than the sum of its proper divisors (2162808012).

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

1622105988 is a wasteful number, since it uses less digits than its factorization.

1622105988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135175506 (or 135175504 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1622105988 is about 40275.3769442323. The cubic root of 1622105988 is about 1174.9690018682.

The spelling of 1622105988 in words is "one billion, six hundred twenty-two million, one hundred five thousand, nine hundred eighty-eight".