194504538 has 16 divisors (see below), whose sum is σ = 389605536. Its totient is φ = 64735440.

The previous prime is 194504521. The next prime is 194504549. The reversal of 194504538 is 835405491.

It is a junction number, because it is equal to n+sod(n) for n = 194504496 and 194504505.

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, 20556 + ... + 28487.

It is an arithmetic number, because the mean of its divisors is an integer number (24350346).

Almost surely, 2^194504538 is an apocalyptic number.

194504538 is an abundant number, since it is smaller than the sum of its proper divisors (195100998).

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

194504538 is a wasteful number, since it uses less digits than its factorization.

194504538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49709.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 194504538 is about 13946.4883752147. The cubic root of 194504538 is about 579.3974499435.

The spelling of 194504538 in words is "one hundred ninety-four million, five hundred four thousand, five hundred thirty-eight".