19850966 has 8 divisors (see below), whose sum is σ = 29817480. Its totient is φ = 9911808.

The previous prime is 19850947. The next prime is 19850969. The reversal of 19850966 is 66905891.

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

It is a super-2 number, since 2×19850966² = 788121702266312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19850969) 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, 4916 + ... + 7991.

It is an arithmetic number, because the mean of its divisors is an integer number (3727185).

Almost surely, 2^19850966 is an apocalyptic number.

19850966 is a deficient number, since it is larger than the sum of its proper divisors (9966514).

19850966 is a wasteful number, since it uses less digits than its factorization.

19850966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13678.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 19850966 is about 4455.4422900538. The cubic root of 19850966 is about 270.7658457697.

The spelling of 19850966 in words is "nineteen million, eight hundred fifty thousand, nine hundred sixty-six".