738778361 has 2 divisors, whose sum is σ = 738778362. Its totient is φ = 738778360.

The previous prime is 738778321. The next prime is 738778427. The reversal of 738778361 is 163877837.

738778361 = 19219² + 19220².

738778361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369408400 + 369369961 = 19220^2 + 19219^2 .

It is a cyclic number.

It is not a de Polignac number, because 738778361 - 2¹⁴ = 738761977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (738778321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369389180 + 369389181.

It is an arithmetic number, because the mean of its divisors is an integer number (369389181).

Almost surely, 2^738778361 is an apocalyptic number.

738778361 is the 19220-th centered square number.

It is an amenable number.

738778361 is a deficient number, since it is larger than the sum of its proper divisors (1).

738778361 is an equidigital number, since it uses as much as digits as its factorization.

738778361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 50.

The square root of 738778361 is about 27180.4775712275. The cubic root of 738778361 is about 904.0061578567.

It can be divided in two parts, 73877836 and 1, that added together give a palindrome (73877837).

The spelling of 738778361 in words is "seven hundred thirty-eight million, seven hundred seventy-eight thousand, three hundred sixty-one".