1850533077649 has 9 divisors (see below), whose sum is σ = 1953082964667. Its totient is φ = 1753112113704.

The previous prime is 1850533077637. The next prime is 1850533077661. The reversal of 1850533077649 is 9467703350581.

The square root of 1850533077649 is 1360343.

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

It is an interprime number because it is at equal distance from previous prime (1850533077637) and next prime (1850533077661).

It can be written as a sum of positive squares in only one way, i.e., 1764606708225 + 85926369424 = 1328385^2 + 293132^2 .

It is not a de Polignac number, because 1850533077649 - 2¹⁹ = 1850532553361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1850533077593 and 1850533077602.

It is not an unprimeable number, because it can be changed into a prime (1850533077629) 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 8 ways as a sum of consecutive naturals, for example, 25810719 + ... + 25882315.

Almost surely, 2^{1850533077649} is an apocalyptic number.

1850533077649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1850533077649 is the 1360343-rd square number.

1850533077649 is the 680172-nd centered octagonal number.

It is an amenable number.

1850533077649 is a deficient number, since it is larger than the sum of its proper divisors (102549887018).

1850533077649 is an frugal number, since it uses more digits than its factorization.

1850533077649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143232 (or 71616 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 1850533077649 in words is "one trillion, eight hundred fifty billion, five hundred thirty-three million, seventy-seven thousand, six hundred forty-nine".