773338381 has 4 divisors (see below), whose sum is σ = 818828892. Its totient is φ = 727847872.

The previous prime is 773338373. The next prime is 773338387. The reversal of 773338381 is 183833377.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294122500 + 479215881 = 17150^2 + 21891^2 .

It is a cyclic number.

It is not a de Polignac number, because 773338381 - 2³ = 773338373 is a prime.

It is a super-2 number, since 2×773338381² = 1196104503055402322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (773338387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22745230 + ... + 22745263.

It is an arithmetic number, because the mean of its divisors is an integer number (204707223).

Almost surely, 2^773338381 is an apocalyptic number.

It is an amenable number.

773338381 is a deficient number, since it is larger than the sum of its proper divisors (45490511).

773338381 is a wasteful number, since it uses less digits than its factorization.

773338381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45490510.

The product of its digits is 254016, while the sum is 43.

The square root of 773338381 is about 27808.9622424139. The cubic root of 773338381 is about 917.8883440949. Note that the first 3 decimals are identical.

The spelling of 773338381 in words is "seven hundred seventy-three million, three hundred thirty-eight thousand, three hundred eighty-one".