11803282381 has 16 divisors (see below), whose sum is σ = 12928144320. Its totient is φ = 10687137280.

The previous prime is 11803282321. The next prime is 11803282399. The reversal of 11803282381 is 18328230811.

It is a cyclic number.

It is not a de Polignac number, because 11803282381 - 2²¹ = 11801185229 is a prime.

It is a super-2 number, since 2×11803282381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11803282381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11803282321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6247485 + ... + 6249373.

It is an arithmetic number, because the mean of its divisors is an integer number (808009020).

Almost surely, 2^11803282381 is an apocalyptic number.

11803282381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11803282381 is a deficient number, since it is larger than the sum of its proper divisors (1124861939).

11803282381 is a wasteful number, since it uses less digits than its factorization.

11803282381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 11803282381 in words is "eleven billion, eight hundred three million, two hundred eighty-two thousand, three hundred eighty-one".