19412993 has 2 divisors, whose sum is σ = 19412994. Its totient is φ = 19412992.

The previous prime is 19412957. The next prime is 19413001. The reversal of 19412993 is 39921491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9784384 + 9628609 = 3128^2 + 3103^2 .

It is a cyclic number.

It is not a de Polignac number, because 19412993 - 2²⁰ = 18364417 is a prime.

It is not a weakly prime, because it can be changed into another prime (19412933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9706496 + 9706497.

It is an arithmetic number, because the mean of its divisors is an integer number (9706497).

Almost surely, 2^19412993 is an apocalyptic number.

It is an amenable number.

19412993 is a deficient number, since it is larger than the sum of its proper divisors (1).

19412993 is an equidigital number, since it uses as much as digits as its factorization.

19412993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 38.

The square root of 19412993 is about 4406.0178165777. The cubic root of 19412993 is about 268.7597113491.

The spelling of 19412993 in words is "nineteen million, four hundred twelve thousand, nine hundred ninety-three".