19390066 has 8 divisors (see below), whose sum is σ = 30023424. Its totient is φ = 9382260.

The previous prime is 19390043. The next prime is 19390079. The reversal of 19390066 is 66009391.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156310 + ... + 156433.

It is an arithmetic number, because the mean of its divisors is an integer number (3752928).

Almost surely, 2^19390066 is an apocalyptic number.

19390066 is a deficient number, since it is larger than the sum of its proper divisors (10633358).

19390066 is a wasteful number, since it uses less digits than its factorization.

19390066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312776.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 19390066 is about 4403.4152654502. The cubic root of 19390066 is about 268.6538667525.

The spelling of 19390066 in words is "nineteen million, three hundred ninety thousand, sixty-six".