19930775 has 12 divisors (see below), whose sum is σ = 24769992. Its totient is φ = 15908640.

The previous prime is 19930769. The next prime is 19930787. The reversal of 19930775 is 57703991.

It is not a de Polignac number, because 19930775 - 2¹⁶ = 19865239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19169 + ... + 20181.

It is an arithmetic number, because the mean of its divisors is an integer number (2064166).

Almost surely, 2^19930775 is an apocalyptic number.

19930775 is a deficient number, since it is larger than the sum of its proper divisors (4839217).

19930775 is a wasteful number, since it uses less digits than its factorization.

19930775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 19930775 is about 4464.3896559328. The cubic root of 19930775 is about 271.1282237038.

The spelling of 19930775 in words is "nineteen million, nine hundred thirty thousand, seven hundred seventy-five".