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194895241 = 1371422593
BaseRepresentation
bin10111001110111…
…01110110001001
3111120201201000021
423213131312021
5344343121431
631201140441
74554403462
oct1347356611
9446651007
10194895241
11a0016752
125532a721
13314ba938
141bc53d69
151219bb11
hexb9ddd89

194895241 has 4 divisors (see below), whose sum is σ = 196317972. Its totient is φ = 193472512.

The previous prime is 194895203. The next prime is 194895251. The reversal of 194895241 is 142598491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142598491 = 720371213.

It can be written as a sum of positive squares in 2 ways, for example, as 153884025 + 41011216 = 12405^2 + 6404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-194895241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194895251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 711160 + ... + 711433.

It is an arithmetic number, because the mean of its divisors is an integer number (49079493).

Almost surely, 2194895241 is an apocalyptic number.

It is an amenable number.

194895241 is a deficient number, since it is larger than the sum of its proper divisors (1422731).

194895241 is a wasteful number, since it uses less digits than its factorization.

194895241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422730.

The product of its digits is 103680, while the sum is 43.

The square root of 194895241 is about 13960.4885659493. The cubic root of 194895241 is about 579.7851374170.

The spelling of 194895241 in words is "one hundred ninety-four million, eight hundred ninety-five thousand, two hundred forty-one".

Divisors: 1 137 1422593 194895241