20095381 has 2 divisors, whose sum is σ = 20095382. Its totient is φ = 20095380.

The previous prime is 20095363. The next prime is 20095421. The reversal of 20095381 is 18359002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19439281 + 656100 = 4409^2 + 810^2 .

It is a cyclic number.

It is not a de Polignac number, because 20095381 - 2⁷ = 20095253 is a prime.

It is a super-2 number, since 2×20095381² = 807648675070322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20095981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10047690 + 10047691.

It is an arithmetic number, because the mean of its divisors is an integer number (10047691).

Almost surely, 2^20095381 is an apocalyptic number.

It is an amenable number.

20095381 is a deficient number, since it is larger than the sum of its proper divisors (1).

20095381 is an equidigital number, since it uses as much as digits as its factorization.

20095381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 20095381 is about 4482.7871910230. The cubic root of 20095381 is about 271.8725839570.

The spelling of 20095381 in words is "twenty million, ninety-five thousand, three hundred eighty-one".