11387085493 has 4 divisors (see below), whose sum is σ = 13013812000. Its totient is φ = 9760358988.

The previous prime is 11387085487. The next prime is 11387085511. The reversal of 11387085493 is 39458078311.

It is a happy number.

11387085493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39458078311 = 34679 ⋅1137809.

It is a cyclic number.

It is not a de Polignac number, because 11387085493 - 2²¹ = 11384988341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387085403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813363243 + ... + 813363256.

It is an arithmetic number, because the mean of its divisors is an integer number (3253453000).

Almost surely, 2^11387085493 is an apocalyptic number.

It is an amenable number.

11387085493 is a deficient number, since it is larger than the sum of its proper divisors (1626726507).

11387085493 is an equidigital number, since it uses as much as digits as its factorization.

11387085493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626726506.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 11387085493 in words is "eleven billion, three hundred eighty-seven million, eighty-five thousand, four hundred ninety-three".