194340816 has 80 divisors (see below), whose sum is σ = 587214400. Its totient is φ = 61368192.

The previous prime is 194340763. The next prime is 194340827. The reversal of 194340816 is 618043491.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3631 + ... + 20046.

It is an arithmetic number, because the mean of its divisors is an integer number (7340180).

Almost surely, 2^194340816 is an apocalyptic number.

194340816 is a gapful number since it is divisible by the number (16) 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 194340816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293607200).

194340816 is an abundant number, since it is smaller than the sum of its proper divisors (392873584).

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

194340816 is a wasteful number, since it uses less digits than its factorization.

194340816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23713 (or 23701 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 194340816 is about 13940.6174899106. The cubic root of 194340816 is about 579.2348372207.

The spelling of 194340816 in words is "one hundred ninety-four million, three hundred forty thousand, eight hundred sixteen".