194669838 has 64 divisors (see below), whose sum is σ = 492480000. Its totient is φ = 56422080.

The previous prime is 194669833. The next prime is 194669843. The reversal of 194669838 is 838966491.

It is an interprime number because it is at equal distance from previous prime (194669833) and next prime (194669843).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194669831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6538 + ... + 20786.

It is an arithmetic number, because the mean of its divisors is an integer number (7695000).

Almost surely, 2^194669838 is an apocalyptic number.

194669838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 194669838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246240000).

194669838 is an abundant number, since it is smaller than the sum of its proper divisors (297810162).

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

194669838 is a wasteful number, since it uses less digits than its factorization.

194669838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14294 (or 14288 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 194669838 is about 13952.4133396341. The cubic root of 194669838 is about 579.5615374260.

The spelling of 194669838 in words is "one hundred ninety-four million, six hundred sixty-nine thousand, eight hundred thirty-eight".