20076181 has 2 divisors, whose sum is σ = 20076182. Its totient is φ = 20076180.

The previous prime is 20076113. The next prime is 20076193. The reversal of 20076181 is 18167002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14945956 + 5130225 = 3866^2 + 2265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20076181 - 2²¹ = 17979029 is a prime.

It is a super-2 number, since 2×20076181² = 806106087089522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20076281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038090 + 10038091.

It is an arithmetic number, because the mean of its divisors is an integer number (10038091).

Almost surely, 2^20076181 is an apocalyptic number.

It is an amenable number.

20076181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20076181 is an equidigital number, since it uses as much as digits as its factorization.

20076181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 20076181 is about 4480.6451544393. The cubic root of 20076181 is about 271.7859700738.

The spelling of 20076181 in words is "twenty million, seventy-six thousand, one hundred eighty-one".