194490464 has 48 divisors (see below), whose sum is σ = 438939648. Its totient is φ = 83098752.

The previous prime is 194490449. The next prime is 194490487. The reversal of 194490464 is 464094491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84659 + ... + 86925.

It is an arithmetic number, because the mean of its divisors is an integer number (9144576).

Almost surely, 2^194490464 is an apocalyptic number.

194490464 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 194490464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219469824).

194490464 is an abundant number, since it is smaller than the sum of its proper divisors (244449184).

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

194490464 is a wasteful number, since it uses less digits than its factorization.

194490464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 194490464 is about 13945.9837946270. The cubic root of 194490464 is about 579.3834748858.

The spelling of 194490464 in words is "one hundred ninety-four million, four hundred ninety thousand, four hundred sixty-four".