194153723797 has 64 divisors (see below), whose sum is σ = 227636386560. Its totient is φ = 163924992000.

The previous prime is 194153723759. The next prime is 194153723809. The reversal of 194153723797 is 797327351491.

It is a de Polignac number, because none of the positive numbers 2^k-194153723797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194153723717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 489052003 + ... + 489052399.

It is an arithmetic number, because the mean of its divisors is an integer number (3556818540).

Almost surely, 2^194153723797 is an apocalyptic number.

It is an amenable number.

194153723797 is a deficient number, since it is larger than the sum of its proper divisors (33482662763).

194153723797 is a wasteful number, since it uses less digits than its factorization.

194153723797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its digits is 10001880, while the sum is 58.

The spelling of 194153723797 in words is "one hundred ninety-four billion, one hundred fifty-three million, seven hundred twenty-three thousand, seven hundred ninety-seven".