1993018712 has 16 divisors (see below), whose sum is σ = 3737391840. Its totient is φ = 996380896.

The previous prime is 1993018697. The next prime is 1993018717. The reversal of 1993018712 is 2178103991.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1993018712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993018717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95318 + ... + 114330.

It is an arithmetic number, because the mean of its divisors is an integer number (233586990).

Almost surely, 2^1993018712 is an apocalyptic number.

It is an amenable number.

1993018712 is a deficient number, since it is larger than the sum of its proper divisors (1744373128).

1993018712 is a wasteful number, since it uses less digits than its factorization.

1993018712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32122 (or 32118 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 1993018712 is about 44643.2381442028. The cubic root of 1993018712 is about 1258.4533622251.

The spelling of 1993018712 in words is "one billion, nine hundred ninety-three million, eighteen thousand, seven hundred twelve".