11778413 has 2 divisors, whose sum is σ = 11778414. Its totient is φ = 11778412.

The previous prime is 11778409. The next prime is 11778451. The reversal of 11778413 is 31487711.

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., 8743849 + 3034564 = 2957^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 11778413 - 2² = 11778409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11778413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11778463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5889206 + 5889207.

It is an arithmetic number, because the mean of its divisors is an integer number (5889207).

Almost surely, 2^11778413 is an apocalyptic number.

It is an amenable number.

11778413 is a deficient number, since it is larger than the sum of its proper divisors (1).

11778413 is an equidigital number, since it uses as much as digits as its factorization.

11778413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 32.

The square root of 11778413 is about 3431.9692597691. The cubic root of 11778413 is about 227.5248968446.

The spelling of 11778413 in words is "eleven million, seven hundred seventy-eight thousand, four hundred thirteen".