194229500261 has 8 divisors (see below), whose sum is σ = 199487439480. Its totient is φ = 188972008128.

The previous prime is 194229500249. The next prime is 194229500293. The reversal of 194229500261 is 162005922491.

It can be written as a sum of positive squares in 4 ways, for example, as 117628420900 + 76601079361 = 342970^2 + 276769^2 .

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 194229500261 - 2²² = 194225305957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194229508261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888335 + ... + 1085171.

It is an arithmetic number, because the mean of its divisors is an integer number (24935929935).

Almost surely, 2^194229500261 is an apocalyptic number.

It is an amenable number.

194229500261 is a deficient number, since it is larger than the sum of its proper divisors (5257939219).

194229500261 is a wasteful number, since it uses less digits than its factorization.

194229500261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223543.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 194229500261 in words is "one hundred ninety-four billion, two hundred twenty-nine million, five hundred thousand, two hundred sixty-one".