6191145 has 24 divisors (see below), whose sum is σ = 11363976. Its totient is φ = 3107328.

The previous prime is 6191137. The next prime is 6191147. The reversal of 6191145 is 5411916.

6191145 is a `hidden beast` number, since 619 + 1 + 1 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1115136 + 5076009 = 1056^2 + 2253^2 .

It is not a de Polignac number, because 6191145 - 2³ = 6191137 is a prime.

It is a super-2 number, since 2×6191145² = 76660552822050, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (6191147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3282 + ... + 4811.

It is an arithmetic number, because the mean of its divisors is an integer number (473499).

Almost surely, 2^6191145 is an apocalyptic number.

It is an amenable number.

6191145 is a deficient number, since it is larger than the sum of its proper divisors (5172831).

6191145 is a wasteful number, since it uses less digits than its factorization.

6191145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8121 (or 8118 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 6191145 is about 2488.2011574630. The cubic root of 6191145 is about 183.6215539934.

It can be divided in two parts, 6191 and 145, that added together give a palindrome (6336).

The spelling of 6191145 in words is "six million, one hundred ninety-one thousand, one hundred forty-five".