11381789 has 8 divisors (see below), whose sum is σ = 12117240. Its totient is φ = 10653696.

The previous prime is 11381761. The next prime is 11381813. The reversal of 11381789 is 98718311.

11381789 = 562² + 563² + ... + 595².

It can be written as a sum of positive squares in 4 ways, for example, as 105625 + 11276164 = 325^2 + 3358^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11381789 - 2¹² = 11377693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547 + ... + 5015.

It is an arithmetic number, because the mean of its divisors is an integer number (1514655).

Almost surely, 2^11381789 is an apocalyptic number.

It is an amenable number.

11381789 is a deficient number, since it is larger than the sum of its proper divisors (735451).

11381789 is a wasteful number, since it uses less digits than its factorization.

11381789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679.

The product of its digits is 12096, while the sum is 38.

The square root of 11381789 is about 3373.6907090010. The cubic root of 11381789 is about 224.9418055259.

The spelling of 11381789 in words is "eleven million, three hundred eighty-one thousand, seven hundred eighty-nine".