19329993 has 18 divisors (see below), whose sum is σ = 28448394. Its totient is φ = 12647712.

The previous prime is 19329991. The next prime is 19330033. The reversal of 19329993 is 39992391.

It can be written as a sum of positive squares in only one way, i.e., 11309769 + 8020224 = 3363^2 + 2832^2 .

It is not a de Polignac number, because 19329993 - 2¹ = 19329991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19329991) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31021 + ... + 31637.

Almost surely, 2^19329993 is an apocalyptic number.

It is an amenable number.

19329993 is a deficient number, since it is larger than the sum of its proper divisors (9118401).

19329993 is an equidigital number, since it uses as much as digits as its factorization.

19329993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 679 counting only the distinct ones).

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

The square root of 19329993 is about 4396.5887913245. The cubic root of 19329993 is about 268.3761379532.

The spelling of 19329993 in words is "nineteen million, three hundred twenty-nine thousand, nine hundred ninety-three".