1999522322 has 18 divisors (see below), whose sum is σ = 3489734997. Its totient is φ = 856748424.

The previous prime is 1999522321. The next prime is 1999522333. The reversal of 1999522322 is 2232259991.

It can be written as a sum of positive squares in 2 ways, for example, as 1125669601 + 873852721 = 33551^2 + 29561^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=31619.

It is not an unprimeable number, because it can be changed into a prime (1999522321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 440408 + ... + 444924.

Almost surely, 2^1999522322 is an apocalyptic number.

1999522322 is a deficient number, since it is larger than the sum of its proper divisors (1490212675).

1999522322 is an frugal number, since it uses more digits than its factorization.

1999522322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9050 (or 4526 counting only the distinct ones).

The product of its digits is 174960, while the sum is 44.

The square root of 1999522322 is about 44716.0186286749. The cubic root of 1999522322 is about 1259.8207358136.

The spelling of 1999522322 in words is "one billion, nine hundred ninety-nine million, five hundred twenty-two thousand, three hundred twenty-two".