194797228538 has 16 divisors (see below), whose sum is σ = 318879076320. Its totient is φ = 88510868400.

The previous prime is 194797228523. The next prime is 194797228553. The reversal of 194797228538 is 835822797491.

It is an interprime number because it is at equal distance from previous prime (194797228523) and next prime (194797228553).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606493 + ... + 1723488.

It is an arithmetic number, because the mean of its divisors is an integer number (19929942270).

Almost surely, 2^194797228538 is an apocalyptic number.

194797228538 is a deficient number, since it is larger than the sum of its proper divisors (124081847782).

194797228538 is a wasteful number, since it uses less digits than its factorization.

194797228538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332653.

The product of its digits is 60963840, while the sum is 65.

The spelling of 194797228538 in words is "one hundred ninety-four billion, seven hundred ninety-seven million, two hundred twenty-eight thousand, five hundred thirty-eight".