11164790381 has 2 divisors, whose sum is σ = 11164790382. Its totient is φ = 11164790380.

The previous prime is 11164790353. The next prime is 11164790389. The reversal of 11164790381 is 18309746111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9145096900 + 2019693481 = 95630^2 + 44941^2 .

It is a cyclic number.

It is not a de Polignac number, because 11164790381 - 2¹⁰ = 11164789357 is a prime.

It is a super-2 number, since 2×11164790381² (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 (11164790389) 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, 5582395190 + 5582395191.

It is an arithmetic number, because the mean of its divisors is an integer number (5582395191).

Almost surely, 2^11164790381 is an apocalyptic number.

It is an amenable number.

11164790381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11164790381 is an equidigital number, since it uses as much as digits as its factorization.

11164790381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 11164790381 in words is "eleven billion, one hundred sixty-four million, seven hundred ninety thousand, three hundred eighty-one".