186050021 has 2 divisors, whose sum is σ = 186050022. Its totient is φ = 186050020.

The previous prime is 186049991. The next prime is 186050027. The reversal of 186050021 is 120050681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167987521 + 18062500 = 12961^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 186050021 - 2²⁶ = 118941157 is a prime.

It is a super-2 number, since 2×186050021² = 69229220628200882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186050027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93025010 + 93025011.

It is an arithmetic number, because the mean of its divisors is an integer number (93025011).

Almost surely, 2^186050021 is an apocalyptic number.

It is an amenable number.

186050021 is a deficient number, since it is larger than the sum of its proper divisors (1).

186050021 is an equidigital number, since it uses as much as digits as its factorization.

186050021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 186050021 is about 13640.0154325426. The cubic root of 186050021 is about 570.8779135849.

The spelling of 186050021 in words is "one hundred eighty-six million, fifty thousand, twenty-one".