19946938 has 8 divisors (see below), whose sum is σ = 32640480. Its totient is φ = 9066780.

The previous prime is 19946923. The next prime is 19946963. The reversal of 19946938 is 83964991.

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

It is a junction number, because it is equal to n+sod(n) for n = 19946891 and 19946900.

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 3 ways as a sum of consecutive naturals, for example, 453318 + ... + 453361.

It is an arithmetic number, because the mean of its divisors is an integer number (4080060).

Almost surely, 2^19946938 is an apocalyptic number.

19946938 is a deficient number, since it is larger than the sum of its proper divisors (12693542).

19946938 is a wasteful number, since it uses less digits than its factorization.

19946938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906692.

The product of its digits is 419904, while the sum is 49.

The square root of 19946938 is about 4466.1995029331. The cubic root of 19946938 is about 271.2014950043.

The spelling of 19946938 in words is "nineteen million, nine hundred forty-six thousand, nine hundred thirty-eight".