194485109 has 8 divisors (see below), whose sum is σ = 239366400. Its totient is φ = 153878256.

The previous prime is 194485073. The next prime is 194485127. The reversal of 194485109 is 901584491.

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

It is not a de Polignac number, because 194485109 - 2¹² = 194481013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194485409) 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, 1068509 + ... + 1068690.

It is an arithmetic number, because the mean of its divisors is an integer number (29920800).

Almost surely, 2^194485109 is an apocalyptic number.

It is an amenable number.

194485109 is a deficient number, since it is larger than the sum of its proper divisors (44881291).

194485109 is a wasteful number, since it uses less digits than its factorization.

194485109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137219.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 194485109 is about 13945.7918025475. The cubic root of 194485109 is about 579.3781573552.

The spelling of 194485109 in words is "one hundred ninety-four million, four hundred eighty-five thousand, one hundred nine".