186734038481 has 2 divisors, whose sum is σ = 186734038482. Its totient is φ = 186734038480.

The previous prime is 186734038459. The next prime is 186734038483. The reversal of 186734038481 is 184830437681.

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., 181761532225 + 4972506256 = 426335^2 + 70516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-186734038481 is a prime.

It is a super-2 number, since 2×186734038481² (a number of 23 digits) contains 22 as substring.

Together with 186734038483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (186734038483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93367019240 + 93367019241.

It is an arithmetic number, because the mean of its divisors is an integer number (93367019241).

Almost surely, 2^186734038481 is an apocalyptic number.

It is an amenable number.

186734038481 is a deficient number, since it is larger than the sum of its proper divisors (1).

186734038481 is an equidigital number, since it uses as much as digits as its factorization.

186734038481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 186734038481 in words is "one hundred eighty-six billion, seven hundred thirty-four million, thirty-eight thousand, four hundred eighty-one".