19363994 has 12 divisors (see below), whose sum is σ = 31316586. Its totient is φ = 8926872.

The previous prime is 19363979. The next prime is 19364039. The reversal of 19363994 is 49936391.

It can be written as a sum of positive squares in only one way, i.e., 18619225 + 744769 = 4315^2 + 863^2 .

It is a plaindrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22007 + ... + 22869.

Almost surely, 2^19363994 is an apocalyptic number.

19363994 is a deficient number, since it is larger than the sum of its proper divisors (11952592).

19363994 is an frugal number, since it uses more digits than its factorization.

19363994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741 (or 878 counting only the distinct ones).

The product of its digits is 157464, while the sum is 44.

The square root of 19363994 is about 4400.4538402306. The cubic root of 19363994 is about 268.5334015390.

The spelling of 19363994 in words is "nineteen million, three hundred sixty-three thousand, nine hundred ninety-four".