7401618449 has 2 divisors, whose sum is σ = 7401618450. Its totient is φ = 7401618448.

The previous prime is 7401618443. The next prime is 7401618461. The reversal of 7401618449 is 9448161047.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7153776400 + 247842049 = 84580^2 + 15743^2 .

It is a cyclic number.

It is not a de Polignac number, because 7401618449 - 2³² = 3106651153 is a prime.

It is not a weakly prime, because it can be changed into another prime (7401618443) 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, 3700809224 + 3700809225.

It is an arithmetic number, because the mean of its divisors is an integer number (3700809225).

Almost surely, 2^7401618449 is an apocalyptic number.

It is an amenable number.

7401618449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7401618449 is an equidigital number, since it uses as much as digits as its factorization.

7401618449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 7401618449 is about 86032.6591998643. The cubic root of 7401618449 is about 1948.8372159528.

The spelling of 7401618449 in words is "seven billion, four hundred one million, six hundred eighteen thousand, four hundred forty-nine".