194970609 has 48 divisors (see below), whose sum is σ = 313372800. Its totient is φ = 116252928.

The previous prime is 194970599. The next prime is 194970613. The reversal of 194970609 is 906079491.

It is not a de Polignac number, because 194970609 - 2¹¹ = 194968561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194970619) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349759 + ... + 350315.

It is an arithmetic number, because the mean of its divisors is an integer number (6528600).

Almost surely, 2^194970609 is an apocalyptic number.

194970609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

194970609 is a deficient number, since it is larger than the sum of its proper divisors (118402191).

194970609 is a wasteful number, since it uses less digits than its factorization.

194970609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 194970609 is about 13963.1876374988. The cubic root of 194970609 is about 579.8598640829.

The spelling of 194970609 in words is "one hundred ninety-four million, nine hundred seventy thousand, six hundred nine".