182781045841 has 3 divisors (see below), whose sum is σ = 182781473371. Its totient is φ = 182780618312.

The previous prime is 182781045833. The next prime is 182781045869. The reversal of 182781045841 is 148540187281.

The square root of 182781045841 is 427529.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 148540187281 = 22073 ⋅6729497.

It can be written as a sum of positive squares in only one way, i.e., 92733039441 + 90048006400 = 304521^2 + 300080^2 .

It is not a de Polignac number, because 182781045841 - 2³ = 182781045833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (182781045341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 213765 + ... + 641293.

Almost surely, 2^182781045841 is an apocalyptic number.

182781045841 is the 427529-th square number.

182781045841 is the 213765-th centered octagonal number.

It is an amenable number.

182781045841 is a deficient number, since it is larger than the sum of its proper divisors (427530).

182781045841 is an frugal number, since it uses more digits than its factorization.

182781045841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855058 (or 427529 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 49.

Multiplying 182781045841 by its sum of digits (49), we get a square (8956271246209 = 2992703²).

The spelling of 182781045841 in words is "one hundred eighty-two billion, seven hundred eighty-one million, forty-five thousand, eight hundred forty-one".