194145133 has 8 divisors (see below), whose sum is σ = 238947968. Its totient is φ = 153609264.

The previous prime is 194145121. The next prime is 194145137. The reversal of 194145133 is 331541491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194145133 - 2¹³ = 194136941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194145095 and 194145104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194145137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066641 + ... + 1066822.

It is an arithmetic number, because the mean of its divisors is an integer number (29868496).

Almost surely, 2^194145133 is an apocalyptic number.

194145133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

194145133 is a deficient number, since it is larger than the sum of its proper divisors (44802835).

194145133 is a wasteful number, since it uses less digits than its factorization.

194145133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133483.

The product of its digits is 6480, while the sum is 31.

The square root of 194145133 is about 13933.5972742146. The cubic root of 194145133 is about 579.0403601891.

It can be divided in two parts, 1941 and 45133, that added together give a palindrome (47074).

The spelling of 194145133 in words is "one hundred ninety-four million, one hundred forty-five thousand, one hundred thirty-three".