1354843060649 has 4 divisors (see below), whose sum is σ = 1459061757636. Its totient is φ = 1250624363664.

The previous prime is 1354843060639. The next prime is 1354843060783. The reversal of 1354843060649 is 9460603484531.

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 854367462400 + 500475598249 = 924320^2 + 707443^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1354843060649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1354843060649.

It is not an unprimeable number, because it can be changed into a prime (1354843060639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52109348474 + ... + 52109348499.

It is an arithmetic number, because the mean of its divisors is an integer number (364765439409).

Almost surely, 2^{1354843060649} is an apocalyptic number.

It is an amenable number.

1354843060649 is a deficient number, since it is larger than the sum of its proper divisors (104218696987).

1354843060649 is a wasteful number, since it uses less digits than its factorization.

1354843060649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104218696986.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 1354843060649 in words is "one trillion, three hundred fifty-four billion, eight hundred forty-three million, sixty thousand, six hundred forty-nine".