1993448939 has 12 divisors (see below), whose sum is σ = 2096191056. Its totient is φ = 1892082192.

The previous prime is 1993448927. The next prime is 1993448957. The reversal of 1993448939 is 9398443991.

It is not a de Polignac number, because 1993448939 - 2⁸ = 1993448683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1993448909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2682602 + ... + 2683344.

It is an arithmetic number, because the mean of its divisors is an integer number (174682588).

Almost surely, 2^1993448939 is an apocalyptic number.

1993448939 is a deficient number, since it is larger than the sum of its proper divisors (102742117).

1993448939 is an frugal number, since it uses more digits than its factorization.

1993448939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 923 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 59.

The square root of 1993448939 is about 44648.0563854688. The cubic root of 1993448939 is about 1258.5439085669.

The spelling of 1993448939 in words is "one billion, nine hundred ninety-three million, four hundred forty-eight thousand, nine hundred thirty-nine".