19392993 has 8 divisors (see below), whose sum is σ = 28730400. Its totient is φ = 12928644.

The previous prime is 19392983. The next prime is 19393019. The reversal of 19392993 is 39929391.

It is not a de Polignac number, because 19392993 - 2¹⁰ = 19391969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19392973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359103 + ... + 359156.

It is an arithmetic number, because the mean of its divisors is an integer number (3591300).

Almost surely, 2^19392993 is an apocalyptic number.

It is an amenable number.

19392993 is a deficient number, since it is larger than the sum of its proper divisors (9337407).

19392993 is an equidigital number, since it uses as much as digits as its factorization.

19392993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718268 (or 718262 counting only the distinct ones).

The product of its digits is 118098, while the sum is 45.

The square root of 19392993 is about 4403.7476085716. The cubic root of 19392993 is about 268.6673841606.

The spelling of 19392993 in words is "nineteen million, three hundred ninety-two thousand, nine hundred ninety-three".