1241868109 has 2 divisors, whose sum is σ = 1241868110. Its totient is φ = 1241868108.

The previous prime is 1241868059. The next prime is 1241868113. The reversal of 1241868109 is 9018681421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 864654025 + 377214084 = 29405^2 + 19422^2 .

It is an emirp because it is prime and its reverse (9018681421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241868109 - 2¹¹ = 1241866061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241868209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620934054 + 620934055.

It is an arithmetic number, because the mean of its divisors is an integer number (620934055).

Almost surely, 2^1241868109 is an apocalyptic number.

It is an amenable number.

1241868109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241868109 is an equidigital number, since it uses as much as digits as its factorization.

1241868109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1241868109 is about 35240.1491058140. The cubic root of 1241868109 is about 1074.8763107013.

The spelling of 1241868109 in words is "one billion, two hundred forty-one million, eight hundred sixty-eight thousand, one hundred nine".