18277141 has 2 divisors, whose sum is σ = 18277142. Its totient is φ = 18277140.

The previous prime is 18277123. The next prime is 18277151. The reversal of 18277141 is 14177281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18096516 + 180625 = 4254^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 18277141 - 2⁵ = 18277109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18277121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9138570 + 9138571.

It is an arithmetic number, because the mean of its divisors is an integer number (9138571).

Almost surely, 2^18277141 is an apocalyptic number.

It is an amenable number.

18277141 is a deficient number, since it is larger than the sum of its proper divisors (1).

18277141 is an equidigital number, since it uses as much as digits as its factorization.

18277141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 31.

The square root of 18277141 is about 4275.1773062646. The cubic root of 18277141 is about 263.4123224382.

The spelling of 18277141 in words is "eighteen million, two hundred seventy-seven thousand, one hundred forty-one".