1993203522 has 54 divisors (see below), whose sum is σ = 4595009913. Its totient is φ = 624308544.

The previous prime is 1993203491. The next prime is 1993203551. The reversal of 1993203522 is 2253023991.

It can be written as a sum of positive squares in 2 ways, for example, as 1824229521 + 168974001 = 42711^2 + 12999^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=31569.

It is a super-2 number, since 2×1993203522² = 7945720560226408968, which contains 22 as substring.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 3219729 + ... + 3220347.

Almost surely, 2^1993203522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993203522

1993203522 is an abundant number, since it is smaller than the sum of its proper divisors (2601806391).

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

1993203522 is an equidigital number, since it uses as much as digits as its factorization.

1993203522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1993203522 is about 44645.3079505562. The cubic root of 1993203522 is about 1258.4922592637.

The spelling of 1993203522 in words is "one billion, nine hundred ninety-three million, two hundred three thousand, five hundred twenty-two".