918746449 has 2 divisors, whose sum is σ = 918746450. Its totient is φ = 918746448.

The previous prime is 918746401. The next prime is 918746533. The reversal of 918746449 is 944647819.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546063424 + 372683025 = 23368^2 + 19305^2 .

It is a cyclic number.

It is not a de Polignac number, because 918746449 - 2¹³ = 918738257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 918746396 and 918746405.

It is not a weakly prime, because it can be changed into another prime (918746749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459373224 + 459373225.

It is an arithmetic number, because the mean of its divisors is an integer number (459373225).

Almost surely, 2^918746449 is an apocalyptic number.

It is an amenable number.

918746449 is a deficient number, since it is larger than the sum of its proper divisors (1).

918746449 is an equidigital number, since it uses as much as digits as its factorization.

918746449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 52.

The square root of 918746449 is about 30310.8305560900. The cubic root of 918746449 is about 972.1468900402.

The spelling of 918746449 in words is "nine hundred eighteen million, seven hundred forty-six thousand, four hundred forty-nine".