1993478196 has 24 divisors (see below), whose sum is σ = 4652817120. Its totient is φ = 664297312.

The previous prime is 1993478189. The next prime is 1993478203. The reversal of 1993478196 is 6918743991.

It is an interprime number because it is at equal distance from previous prime (1993478189) and next prime (1993478203).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21535 + ... + 66713.

It is an arithmetic number, because the mean of its divisors is an integer number (193867380).

Almost surely, 2^1993478196 is an apocalyptic number.

It is an amenable number.

1993478196 is an abundant number, since it is smaller than the sum of its proper divisors (2659338924).

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

1993478196 is a wasteful number, since it uses less digits than its factorization.

1993478196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48863 (or 48861 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The square root of 1993478196 is about 44648.3840245087. The cubic root of 1993478196 is about 1258.5500655742.

The spelling of 1993478196 in words is "one billion, nine hundred ninety-three million, four hundred seventy-eight thousand, one hundred ninety-six".