13111893 has 6 divisors (see below), whose sum is σ = 18939414. Its totient is φ = 8741256.

The previous prime is 13111877. The next prime is 13111897. The reversal of 13111893 is 39811131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8625969 + 4485924 = 2937^2 + 2118^2 .

It is not a de Polignac number, because 13111893 - 2⁴ = 13111877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 728430 + ... + 728447.

It is an arithmetic number, because the mean of its divisors is an integer number (3156569).

Almost surely, 2^13111893 is an apocalyptic number.

It is an amenable number.

13111893 is a deficient number, since it is larger than the sum of its proper divisors (5827521).

13111893 is a wasteful number, since it uses less digits than its factorization.

13111893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456883 (or 1456880 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 13111893 is about 3621.0347968502. The cubic root of 13111893 is about 235.8061524637.

The spelling of 13111893 in words is "thirteen million, one hundred eleven thousand, eight hundred ninety-three".