1867565196061 has 2 divisors, whose sum is σ = 1867565196062. Its totient is φ = 1867565196060.

The previous prime is 1867565196037. The next prime is 1867565196127. The reversal of 1867565196061 is 1606915657681.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1767554296036 + 100010900025 = 1329494^2 + 316245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1867565196061 - 2¹⁹ = 1867564671773 is a prime.

It is a super-2 number, since 2×1867565196061² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1867565196031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933782598030 + 933782598031.

It is an arithmetic number, because the mean of its divisors is an integer number (933782598031).

Almost surely, 2^{1867565196061} is an apocalyptic number.

It is an amenable number.

1867565196061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1867565196061 is an equidigital number, since it uses as much as digits as its factorization.

1867565196061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 61.

The spelling of 1867565196061 in words is "one trillion, eight hundred sixty-seven billion, five hundred sixty-five million, one hundred ninety-six thousand, sixty-one".