16111389 has 16 divisors (see below), whose sum is σ = 24611328. Its totient is φ = 9183792.

The previous prime is 16111387. The next prime is 16111397. The reversal of 16111389 is 98311161.

It is not a de Polignac number, because 16111389 - 2¹ = 16111387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16111387) 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, 11674 + ... + 12980.

It is an arithmetic number, because the mean of its divisors is an integer number (1538208).

Almost surely, 2^16111389 is an apocalyptic number.

It is an amenable number.

16111389 is a deficient number, since it is larger than the sum of its proper divisors (8499939).

16111389 is a wasteful number, since it uses less digits than its factorization.

16111389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904.

The product of its digits is 1296, while the sum is 30.

The square root of 16111389 is about 4013.8994755724. The cubic root of 16111389 is about 252.5676138244.

The spelling of 16111389 in words is "sixteen million, one hundred eleven thousand, three hundred eighty-nine".