1993418332425 has 72 divisors (see below), whose sum is σ = 3969117571328. Its totient is φ = 949717872000.

The previous prime is 1993418332421. The next prime is 1993418332447. The reversal of 1993418332425 is 5242338143991.

It is a happy number.

1993418332425 is a `hidden beast` number, since 1 + 9 + 9 + 3 + 4 + 183 + 32 + 425 = 666.

It is not a de Polignac number, because 1993418332425 - 2² = 1993418332421 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1993418332421) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 10901431 + ... + 11082780.

Almost surely, 2^{1993418332425} is an apocalyptic number.

1993418332425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1993418332425 is a deficient number, since it is larger than the sum of its proper divisors (1975699238903).

1993418332425 is a wasteful number, since it uses less digits than its factorization.

1993418332425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21984271 (or 21984263 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 1993418332425 in words is "one trillion, nine hundred ninety-three billion, four hundred eighteen million, three hundred thirty-two thousand, four hundred twenty-five".