194509464 has 16 divisors (see below), whose sum is σ = 486273720. Its totient is φ = 64836480.

The previous prime is 194509463. The next prime is 194509487. The reversal of 194509464 is 464905491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194509463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4052257 + ... + 4052304.

Almost surely, 2^194509464 is an apocalyptic number.

It is an amenable number.

194509464 is an abundant number, since it is smaller than the sum of its proper divisors (291764256).

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

194509464 is a wasteful number, since it uses less digits than its factorization.

194509464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8104570 (or 8104566 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 194509464 is about 13946.6649776927. The cubic root of 194509464 is about 579.4023411537.

The spelling of 194509464 in words is "one hundred ninety-four million, five hundred nine thousand, four hundred sixty-four".