19343930 has 8 divisors (see below), whose sum is σ = 34819092. Its totient is φ = 7737568.

The previous prime is 19343911. The next prime is 19343939. The reversal of 19343930 is 3934391.

It can be written as a sum of positive squares in 2 ways, for example, as 18809569 + 534361 = 4337^2 + 731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19343939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967187 + ... + 967206.

Almost surely, 2^19343930 is an apocalyptic number.

19343930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19343930 is a deficient number, since it is larger than the sum of its proper divisors (15475162).

19343930 is a wasteful number, since it uses less digits than its factorization.

19343930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934400.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 19343930 is about 4398.1734845274. The cubic root of 19343930 is about 268.4406225370.

The spelling of 19343930 in words is "nineteen million, three hundred forty-three thousand, nine hundred thirty".