194999040 has 108 divisors (see below), whose sum is σ = 674716224. Its totient is φ = 51996672.

The previous prime is 194999039. The next prime is 194999041. The reversal of 194999040 is 40999491.

194999040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (194999039) and next prime (194999041).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (194999041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3057 + ... + 19983.

Almost surely, 2^194999040 is an apocalyptic number.

194999040 is a gapful number since it is divisible by the number (10) 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 194999040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337358112).

194999040 is an abundant number, since it is smaller than the sum of its proper divisors (479717184).

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

194999040 is a wasteful number, since it uses less digits than its factorization.

194999040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16954 (or 16937 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 194999040 is about 13964.2056702127. The cubic root of 194999040 is about 579.8880481506. Note that the first 3 decimals are identical.

The spelling of 194999040 in words is "one hundred ninety-four million, nine hundred ninety-nine thousand, forty".