194371380 has 96 divisors (see below), whose sum is σ = 691111680. Its totient is φ = 44426880.

The previous prime is 194371379. The next prime is 194371393. The reversal of 194371380 is 83173491.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21931 + ... + 29490.

It is an arithmetic number, because the mean of its divisors is an integer number (7199080).

Almost surely, 2^194371380 is an apocalyptic number.

194371380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194371380 is an abundant number, since it is smaller than the sum of its proper divisors (496740300).

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

194371380 is a wasteful number, since it uses less digits than its factorization.

194371380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51446 (or 51438 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 194371380 is about 13941.7136679821. The cubic root of 194371380 is about 579.2652010696.

The spelling of 194371380 in words is "one hundred ninety-four million, three hundred seventy-one thousand, three hundred eighty".