186274752649 has 2 divisors, whose sum is σ = 186274752650. Its totient is φ = 186274752648.

The previous prime is 186274752617. The next prime is 186274752709. The reversal of 186274752649 is 946257472681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182698114624 + 3576638025 = 427432^2 + 59805^2 .

It is a cyclic number.

It is not a de Polignac number, because 186274752649 - 2⁵ = 186274752617 is a prime.

It is a super-2 number, since 2×186274752649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (186274752449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93137376324 + 93137376325.

It is an arithmetic number, because the mean of its divisors is an integer number (93137376325).

Almost surely, 2^186274752649 is an apocalyptic number.

It is an amenable number.

186274752649 is a deficient number, since it is larger than the sum of its proper divisors (1).

186274752649 is an equidigital number, since it uses as much as digits as its factorization.

186274752649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 61.

The spelling of 186274752649 in words is "one hundred eighty-six billion, two hundred seventy-four million, seven hundred fifty-two thousand, six hundred forty-nine".