11186380787 has 2 divisors, whose sum is σ = 11186380788. Its totient is φ = 11186380786.

The previous prime is 11186380757. The next prime is 11186380819. The reversal of 11186380787 is 78708368111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11186380787 - 2¹⁶ = 11186315251 is a prime.

It is a super-2 number, since 2×11186380787² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11186380757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5593190393 + 5593190394.

It is an arithmetic number, because the mean of its divisors is an integer number (5593190394).

Almost surely, 2^11186380787 is an apocalyptic number.

11186380787 is a deficient number, since it is larger than the sum of its proper divisors (1).

11186380787 is an equidigital number, since it uses as much as digits as its factorization.

11186380787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 50.

The spelling of 11186380787 in words is "eleven billion, one hundred eighty-six million, three hundred eighty thousand, seven hundred eighty-seven".