84180361 has 2 divisors, whose sum is σ = 84180362. Its totient is φ = 84180360.

The previous prime is 84180329. The next prime is 84180389. The reversal of 84180361 is 16308148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65205625 + 18974736 = 8075^2 + 4356^2 .

It is a cyclic number.

It is not a de Polignac number, because 84180361 - 2⁵ = 84180329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84187361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42090180 + 42090181.

It is an arithmetic number, because the mean of its divisors is an integer number (42090181).

Almost surely, 2^84180361 is an apocalyptic number.

It is an amenable number.

84180361 is a deficient number, since it is larger than the sum of its proper divisors (1).

84180361 is an equidigital number, since it uses as much as digits as its factorization.

84180361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 84180361 is about 9174.9856130677. The cubic root of 84180361 is about 438.2651400932.

The spelling of 84180361 in words is "eighty-four million, one hundred eighty thousand, three hundred sixty-one".