738133681 has 2 divisors, whose sum is σ = 738133682. Its totient is φ = 738133680.

The previous prime is 738133663. The next prime is 738133751. The reversal of 738133681 is 186331837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 487703056 + 250430625 = 22084^2 + 15825^2 .

It is an emirp because it is prime and its reverse (186331837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 738133681 - 2¹¹ = 738131633 is a prime.

It is a super-2 number, since 2×738133681² = 1089682662053219522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (738133651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369066840 + 369066841.

It is an arithmetic number, because the mean of its divisors is an integer number (369066841).

Almost surely, 2^738133681 is an apocalyptic number.

It is an amenable number.

738133681 is a deficient number, since it is larger than the sum of its proper divisors (1).

738133681 is an equidigital number, since it uses as much as digits as its factorization.

738133681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 738133681 is about 27168.6157358081. The cubic root of 738133681 is about 903.7431271003.

The spelling of 738133681 in words is "seven hundred thirty-eight million, one hundred thirty-three thousand, six hundred eighty-one".