738197145809 has 2 divisors, whose sum is σ = 738197145810. Its totient is φ = 738197145808.

The previous prime is 738197145799. The next prime is 738197145887. The reversal of 738197145809 is 908541791837.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398362945600 + 339834200209 = 631160^2 + 582953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-738197145809 is a prime.

It is not a weakly prime, because it can be changed into another prime (738197145899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369098572904 + 369098572905.

It is an arithmetic number, because the mean of its divisors is an integer number (369098572905).

Almost surely, 2^738197145809 is an apocalyptic number.

It is an amenable number.

738197145809 is a deficient number, since it is larger than the sum of its proper divisors (1).

738197145809 is an equidigital number, since it uses as much as digits as its factorization.

738197145809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 62.

The spelling of 738197145809 in words is "seven hundred thirty-eight billion, one hundred ninety-seven million, one hundred forty-five thousand, eight hundred nine".