10186381 has 2 divisors, whose sum is σ = 10186382. Its totient is φ = 10186380.

The previous prime is 10186373. The next prime is 10186387. The reversal of 10186381 is 18368101.

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., 8037225 + 2149156 = 2835^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 10186381 - 2³ = 10186373 is a prime.

It is a super-2 number, since 2×10186381² = 207524715754322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10186387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5093190 + 5093191.

It is an arithmetic number, because the mean of its divisors is an integer number (5093191).

Almost surely, 2^10186381 is an apocalyptic number.

It is an amenable number.

10186381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10186381 is an equidigital number, since it uses as much as digits as its factorization.

10186381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 10186381 is about 3191.6110351984. The cubic root of 10186381 is about 216.7737240818.

The spelling of 10186381 in words is "ten million, one hundred eighty-six thousand, three hundred eighty-one".