733651381 has 2 divisors, whose sum is σ = 733651382. Its totient is φ = 733651380.

The previous prime is 733651361. The next prime is 733651393. The reversal of 733651381 is 183156337.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447703281 + 285948100 = 21159^2 + 16910^2 .

It is a cyclic number.

It is not a de Polignac number, because 733651381 - 2⁵ = 733651349 is a prime.

It is a super-2 number, since 2×733651381² = 1076488697686414322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 733651381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (733651361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 366825690 + 366825691.

It is an arithmetic number, because the mean of its divisors is an integer number (366825691).

Almost surely, 2^733651381 is an apocalyptic number.

It is an amenable number.

733651381 is a deficient number, since it is larger than the sum of its proper divisors (1).

733651381 is an equidigital number, since it uses as much as digits as its factorization.

733651381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 733651381 is about 27085.9997231042. Note that the first 3 decimals coincide. The cubic root of 733651381 is about 901.9100918575.

The spelling of 733651381 in words is "seven hundred thirty-three million, six hundred fifty-one thousand, three hundred eighty-one".