194136140 has 48 divisors (see below), whose sum is σ = 449203104. Its totient is φ = 69888000.

The previous prime is 194136139. The next prime is 194136149. The reversal of 194136140 is 41631491.

It is not an unprimeable number, because it can be changed into a prime (194136149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17852 + ... + 26588.

It is an arithmetic number, because the mean of its divisors is an integer number (9358398).

Almost surely, 2^194136140 is an apocalyptic number.

194136140 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 194136140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224601552).

194136140 is an abundant number, since it is smaller than the sum of its proper divisors (255066964).

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

194136140 is a wasteful number, since it uses less digits than its factorization.

194136140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858 (or 8856 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 194136140 is about 13933.2745612796. The cubic root of 194136140 is about 579.0314194716.

The spelling of 194136140 in words is "one hundred ninety-four million, one hundred thirty-six thousand, one hundred forty".