6138145 has 8 divisors (see below), whose sum is σ = 7932456. Its totient is φ = 4532736.

The previous prime is 6138131. The next prime is 6138149. The reversal of 6138145 is 5418316.

6138145 = T₂₄₀ + T₂₄₁ + ... + T₃₆₉.

It can be written as a sum of positive squares in 4 ways, for example, as 7569 + 6130576 = 87^2 + 2476^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6138145 - 2⁵ = 6138113 is a prime.

It is a Duffinian number.

6138145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6138149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47152 + ... + 47281.

It is an arithmetic number, because the mean of its divisors is an integer number (991557).

Almost surely, 2^6138145 is an apocalyptic number.

6138145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6138145 is a deficient number, since it is larger than the sum of its proper divisors (1794311).

6138145 is a wasteful number, since it uses less digits than its factorization.

6138145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94451.

The product of its digits is 2880, while the sum is 28.

The square root of 6138145 is about 2477.5280018599. The cubic root of 6138145 is about 183.0960806138.

The spelling of 6138145 in words is "six million, one hundred thirty-eight thousand, one hundred forty-five".