611982337849 has 9 divisors (see below), whose sum is σ = 617734435437. Its totient is φ = 606283333344.

The previous prime is 611982337819. The next prime is 611982337871. The reversal of 611982337849 is 948733289116.

The square root of 611982337849 is 782293.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 270613242025 + 341369095824 = 520205^2 + 584268^2 .

It is not a de Polignac number, because 611982337849 - 2¹⁷ = 611982206777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611982337819) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85266349 + ... + 85273525.

It is an arithmetic number, because the mean of its divisors is an integer number (68637159493).

Almost surely, 2^611982337849 is an apocalyptic number.

611982337849 is the 782293-rd square number.

611982337849 is the 391147-th centered octagonal number.

It is an amenable number.

611982337849 is a deficient number, since it is larger than the sum of its proper divisors (5752097588).

611982337849 is an frugal number, since it uses more digits than its factorization.

611982337849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14572 (or 7286 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The spelling of 611982337849 in words is "six hundred eleven billion, nine hundred eighty-two million, three hundred thirty-seven thousand, eight hundred forty-nine".