19970194 has 8 divisors (see below), whose sum is σ = 30135168. Its totient is φ = 9925140.

The previous prime is 19970191. The next prime is 19970207. The reversal of 19970194 is 49107991.

It is a happy number.

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 (19970191) 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, 29562 + ... + 30229.

It is an arithmetic number, because the mean of its divisors is an integer number (3766896).

Almost surely, 2^19970194 is an apocalyptic number.

19970194 is a deficient number, since it is larger than the sum of its proper divisors (10164974).

19970194 is a wasteful number, since it uses less digits than its factorization.

19970194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59960.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 19970194 is about 4468.8023003932. The cubic root of 19970194 is about 271.3068513992.

It can be divided in two parts, 19970 and 194, that added together give a square (20164 = 142²).

The spelling of 19970194 in words is "nineteen million, nine hundred seventy thousand, one hundred ninety-four".