219142194 has 16 divisors (see below), whose sum is σ = 450130368. Its totient is φ = 71073072.

The previous prime is 219142177. The next prime is 219142201. The reversal of 219142194 is 491241912.

219142194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×219142194² = 96046602382267272, which contains 22 as substring.

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, 493342 + ... + 493785.

It is an arithmetic number, because the mean of its divisors is an integer number (28133148).

Almost surely, 2^219142194 is an apocalyptic number.

219142194 is an abundant number, since it is smaller than the sum of its proper divisors (230988174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219142194 is a wasteful number, since it uses less digits than its factorization.

219142194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987169.

The product of its digits is 5184, while the sum is 33.

The square root of 219142194 is about 14803.4520973994. The cubic root of 219142194 is about 602.8954437552.

The spelling of 219142194 in words is "two hundred nineteen million, one hundred forty-two thousand, one hundred ninety-four".