1438179190849 has 4 divisors (see below), whose sum is σ = 1438448871636. Its totient is φ = 1437909510064.

The previous prime is 1438179190831. The next prime is 1438179190859. The reversal of 1438179190849 is 9480919718341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 991697305600 + 446481885249 = 995840^2 + 668193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438179190849 - 2¹¹ = 1438179188801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438179190859) 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, 134832394 + ... + 134843059.

It is an arithmetic number, because the mean of its divisors is an integer number (359612217909).

Almost surely, 2^{1438179190849} is an apocalyptic number.

It is an amenable number.

1438179190849 is a deficient number, since it is larger than the sum of its proper divisors (269680787).

1438179190849 is an equidigital number, since it uses as much as digits as its factorization.

1438179190849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269680786.

The product of its (nonzero) digits is 15676416, while the sum is 64.

The spelling of 1438179190849 in words is "one trillion, four hundred thirty-eight billion, one hundred seventy-nine million, one hundred ninety thousand, eight hundred forty-nine".