1993553992 has 16 divisors (see below), whose sum is σ = 3754679040. Its totient is φ = 992306256.

The previous prime is 1993553963. The next prime is 1993554037. The reversal of 1993553992 is 2993553991.

It is a happy number.

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, 556948 + ... + 560515.

It is an arithmetic number, because the mean of its divisors is an integer number (234667440).

Almost surely, 2^1993553992 is an apocalyptic number.

It is an amenable number.

1993553992 is a deficient number, since it is larger than the sum of its proper divisors (1761125048).

1993553992 is a wasteful number, since it uses less digits than its factorization.

1993553992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117692 (or 1117688 counting only the distinct ones).

The product of its digits is 2952450, while the sum is 55.

The square root of 1993553992 is about 44649.2328265559. The cubic root of 1993553992 is about 1258.5660162297.

Subtracting 1993553992 from its reverse (2993553991), we obtain a palindrome (999999999).

It can be divided in two parts, 1993 and 553992, that added together give a triangular number (555985 = T₁₀₅₄).

The spelling of 1993553992 in words is "one billion, nine hundred ninety-three million, five hundred fifty-three thousand, nine hundred ninety-two".