1919198 has 16 divisors (see below), whose sum is σ = 3115584. Its totient is φ = 883200.

The previous prime is 1919161. The next prime is 1919231. The reversal of 1919198 is 8919191.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (194724).

2^1919198 is an apocalyptic number.

1919198 is a deficient number, since it is larger than the sum of its proper divisors (1196386).

1919198 is a wasteful number, since it uses less digits than its factorization.

1919198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267.

The product of its digits is 5832, while the sum is 38.

The square root of 1919198 is about 1385.3512190055. The cubic root of 1919198 is about 124.2719922692.

The spelling of 1919198 in words is "one million, nine hundred nineteen thousand, one hundred ninety-eight".