11946388469 has 2 divisors, whose sum is σ = 11946388470. Its totient is φ = 11946388468.

The previous prime is 11946388459. The next prime is 11946388481. The reversal of 11946388469 is 96488364911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11404104100 + 542284369 = 106790^2 + 23287^2 .

It is a cyclic number.

It is not a de Polignac number, because 11946388469 - 2¹⁶ = 11946322933 is a prime.

It is a super-2 number, since 2×11946388469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11946388429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973194234 + 5973194235.

It is an arithmetic number, because the mean of its divisors is an integer number (5973194235).

Almost surely, 2^11946388469 is an apocalyptic number.

It is an amenable number.

11946388469 is a deficient number, since it is larger than the sum of its proper divisors (1).

11946388469 is an equidigital number, since it uses as much as digits as its factorization.

11946388469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 59.

The spelling of 11946388469 in words is "eleven billion, nine hundred forty-six million, three hundred eighty-eight thousand, four hundred sixty-nine".