913348781 has 2 divisors, whose sum is σ = 913348782. Its totient is φ = 913348780.

The previous prime is 913348739. The next prime is 913348831. The reversal of 913348781 is 187843319.

913348781 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., 490223881 + 423124900 = 22141^2 + 20570^2 .

It is a cyclic number.

It is not a de Polignac number, because 913348781 - 2¹⁴ = 913332397 is a prime.

It is a super-2 number, since 2×913348781² = 1668411991508371922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913348081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456674390 + 456674391.

It is an arithmetic number, because the mean of its divisors is an integer number (456674391).

Almost surely, 2^913348781 is an apocalyptic number.

It is an amenable number.

913348781 is a deficient number, since it is larger than the sum of its proper divisors (1).

913348781 is an equidigital number, since it uses as much as digits as its factorization.

913348781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 913348781 is about 30221.6607915581. The cubic root of 913348781 is about 970.2393503654.

The spelling of 913348781 in words is "nine hundred thirteen million, three hundred forty-eight thousand, seven hundred eighty-one".