73738910197 has 2 divisors, whose sum is σ = 73738910198. Its totient is φ = 73738910196.

The previous prime is 73738910191. The next prime is 73738910227. The reversal of 73738910197 is 79101983737.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73095070321 + 643839876 = 270361^2 + 25374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73738910197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73738910191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36869455098 + 36869455099.

It is an arithmetic number, because the mean of its divisors is an integer number (36869455099).

Almost surely, 2^73738910197 is an apocalyptic number.

It is an amenable number.

73738910197 is a deficient number, since it is larger than the sum of its proper divisors (1).

73738910197 is an equidigital number, since it uses as much as digits as its factorization.

73738910197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000376, while the sum is 55.

The spelling of 73738910197 in words is "seventy-three billion, seven hundred thirty-eight million, nine hundred ten thousand, one hundred ninety-seven".