194442378 has 16 divisors (see below), whose sum is σ = 418799136. Its totient is φ = 59828400.

The previous prime is 194442373. The next prime is 194442401. The reversal of 194442378 is 873244491.

It is not an unprimeable number, because it can be changed into a prime (194442373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246348 + ... + 1246503.

It is an arithmetic number, because the mean of its divisors is an integer number (26174946).

Almost surely, 2^194442378 is an apocalyptic number.

194442378 is an abundant number, since it is smaller than the sum of its proper divisors (224356758).

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

194442378 is a wasteful number, since it uses less digits than its factorization.

194442378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492869.

The product of its digits is 193536, while the sum is 42.

The square root of 194442378 is about 13944.2596791655. The cubic root of 194442378 is about 579.3357218502.

The spelling of 194442378 in words is "one hundred ninety-four million, four hundred forty-two thousand, three hundred seventy-eight".