19812934 has 8 divisors (see below), whose sum is σ = 31283640. Its totient is φ = 9385056.

The previous prime is 19812907. The next prime is 19812943. The reversal of 19812934 is 43921891.

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

It is a super-3 number, since 3×19812934³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19812893 and 19812902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260659 + ... + 260734.

It is an arithmetic number, because the mean of its divisors is an integer number (3910455).

Almost surely, 2^19812934 is an apocalyptic number.

19812934 is a deficient number, since it is larger than the sum of its proper divisors (11470706).

19812934 is a wasteful number, since it uses less digits than its factorization.

19812934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521414.

The product of its digits is 15552, while the sum is 37.

The square root of 19812934 is about 4451.1722051612. The cubic root of 19812934 is about 270.5928172451.

The spelling of 19812934 in words is "nineteen million, eight hundred twelve thousand, nine hundred thirty-four".