11738581803 has 56 divisors (see below), whose sum is σ = 19069719648. Its totient is φ = 7179518592.

The previous prime is 11738581781. The next prime is 11738581817. The reversal of 11738581803 is 30818583711.

11738581803 is a `hidden beast` number, since 117 + 385 + 81 + 80 + 3 = 666.

It is not a de Polignac number, because 11738581803 - 2²¹ = 11736484651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11738581403) 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 in 55 ways as a sum of consecutive naturals, for example, 1578951 + ... + 1586367.

It is an arithmetic number, because the mean of its divisors is an integer number (340530708).

Almost surely, 2^11738581803 is an apocalyptic number.

11738581803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11738581803 is a deficient number, since it is larger than the sum of its proper divisors (7331137845).

11738581803 is an equidigital number, since it uses as much as digits as its factorization.

11738581803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615 (or 7600 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 11738581803 in words is "eleven billion, seven hundred thirty-eight million, five hundred eighty-one thousand, eight hundred three".