738645792881 has 2 divisors, whose sum is σ = 738645792882. Its totient is φ = 738645792880.

The previous prime is 738645792877. The next prime is 738645792883. The reversal of 738645792881 is 188297546837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719979402256 + 18666390625 = 848516^2 + 136625^2 .

It is a cyclic number.

It is not a de Polignac number, because 738645792881 - 2² = 738645792877 is a prime.

It is a super-2 number, since 2×738645792881² (a number of 25 digits) contains 22 as substring.

Together with 738645792883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (738645792883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369322896440 + 369322896441.

It is an arithmetic number, because the mean of its divisors is an integer number (369322896441).

Almost surely, 2^738645792881 is an apocalyptic number.

It is an amenable number.

738645792881 is a deficient number, since it is larger than the sum of its proper divisors (1).

738645792881 is an equidigital number, since it uses as much as digits as its factorization.

738645792881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 68.

The spelling of 738645792881 in words is "seven hundred thirty-eight billion, six hundred forty-five million, seven hundred ninety-two thousand, eight hundred eighty-one".