194249478 has 8 divisors (see below), whose sum is σ = 388498968. Its totient is φ = 64749824.

The previous prime is 194249477. The next prime is 194249491. The reversal of 194249478 is 874942491.

It is a sphenic number, since it is the product of 3 distinct primes.

194249478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194249477) 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, 16187451 + ... + 16187462.

It is an arithmetic number, because the mean of its divisors is an integer number (48562371).

Almost surely, 2^194249478 is an apocalyptic number.

194249478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

194249478 is a wasteful number, since it uses less digits than its factorization.

194249478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32374918.

The product of its digits is 580608, while the sum is 48.

The square root of 194249478 is about 13937.3411381081. The cubic root of 194249478 is about 579.1440783788.

The spelling of 194249478 in words is "one hundred ninety-four million, two hundred forty-nine thousand, four hundred seventy-eight".