194484381 has 24 divisors (see below), whose sum is σ = 324856224. Its totient is φ = 102584160.

The previous prime is 194484379. The next prime is 194484391. The reversal of 194484381 is 183484491.

It is not a de Polignac number, because 194484381 - 2¹ = 194484379 is a prime.

It is a super-2 number, since 2×194484381² = 75648348905906322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194484331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48975 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (13535676).

Almost surely, 2^194484381 is an apocalyptic number.

It is an amenable number.

194484381 is a deficient number, since it is larger than the sum of its proper divisors (130371843).

194484381 is a wasteful number, since it uses less digits than its factorization.

194484381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101801 (or 101794 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 194484381 is about 13945.7657014594. The cubic root of 194484381 is about 579.3774344415.

The spelling of 194484381 in words is "one hundred ninety-four million, four hundred eighty-four thousand, three hundred eighty-one".