194838725161123 has 4 divisors (see below), whose sum is σ = 195181148228760. Its totient is φ = 194496302093488.

The previous prime is 194838725161111. The next prime is 194838725161147. The reversal of 194838725161123 is 321161527838491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194838725161123 is a prime.

It is a super-2 number, since 2×194838725161123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194838725161823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171211532965 + ... + 171211534102.

It is an arithmetic number, because the mean of its divisors is an integer number (48795287057190).

Almost surely, 2^{194838725161123} is an apocalyptic number.

194838725161123 is a deficient number, since it is larger than the sum of its proper divisors (342423067637).

194838725161123 is an equidigital number, since it uses as much as digits as its factorization.

194838725161123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342423067636.

The product of its digits is 17418240, while the sum is 61.

The spelling of 194838725161123 in words is "one hundred ninety-four trillion, eight hundred thirty-eight billion, seven hundred twenty-five million, one hundred sixty-one thousand, one hundred twenty-three".