194378464 has 96 divisors (see below), whose sum is σ = 459648000. Its totient is φ = 79170048.

The previous prime is 194378441. The next prime is 194378467. The reversal of 194378464 is 464873491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194378467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389287 + ... + 389785.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^194378464 is an apocalyptic number.

194378464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194378464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229824000).

194378464 is an abundant number, since it is smaller than the sum of its proper divisors (265269536).

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

194378464 is a wasteful number, since it uses less digits than its factorization.

194378464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 592 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 194378464 is about 13941.9677233883. The cubic root of 194378464 is about 579.2722382250.

The spelling of 194378464 in words is "one hundred ninety-four million, three hundred seventy-eight thousand, four hundred sixty-four".