1842180281 has 2 divisors, whose sum is σ = 1842180282. Its totient is φ = 1842180280.

The previous prime is 1842180091. The next prime is 1842180287. The reversal of 1842180281 is 1820812481.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1813397056 + 28783225 = 42584^2 + 5365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1842180281 - 2¹⁸ = 1841918137 is a prime.

It is a super-2 number, since 2×1842180281² = 6787256375410477922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1842180287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921090140 + 921090141.

It is an arithmetic number, because the mean of its divisors is an integer number (921090141).

Almost surely, 2^1842180281 is an apocalyptic number.

It is an amenable number.

1842180281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1842180281 is an equidigital number, since it uses as much as digits as its factorization.

1842180281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8192, while the sum is 35.

The square root of 1842180281 is about 42920.6276864633. The cubic root of 1842180281 is about 1225.8689447131.

The spelling of 1842180281 in words is "one billion, eight hundred forty-two million, one hundred eighty thousand, two hundred eighty-one".