11138493 has 4 divisors (see below), whose sum is σ = 14851328. Its totient is φ = 7425660.

The previous prime is 11138473. The next prime is 11138513. The reversal of 11138493 is 39483111.

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.

It is an interprime number because it is at equal distance from previous prime (11138473) and next prime (11138513).

It is not a de Polignac number, because 11138493 - 2⁹ = 11137981 is a prime.

It is a super-2 number, since 2×11138493² = 248132052622098, which 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 11138493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11138423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856413 + ... + 1856418.

It is an arithmetic number, because the mean of its divisors is an integer number (3712832).

Almost surely, 2^11138493 is an apocalyptic number.

It is an amenable number.

11138493 is a deficient number, since it is larger than the sum of its proper divisors (3712835).

11138493 is an equidigital number, since it uses as much as digits as its factorization.

11138493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712834.

The product of its digits is 2592, while the sum is 30.

The square root of 11138493 is about 3337.4380893134. The cubic root of 11138493 is about 223.3274697107.

The spelling of 11138493 in words is "eleven million, one hundred thirty-eight thousand, four hundred ninety-three".