1211413993 has 2 divisors, whose sum is σ = 1211413994. Its totient is φ = 1211413992.

The previous prime is 1211413969. The next prime is 1211414021. The reversal of 1211413993 is 3993141121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942060249 + 269353744 = 30693^2 + 16412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211413993 - 2²⁵ = 1177859561 is a prime.

It is a super-3 number, since 3×1211413993³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1211413963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605706996 + 605706997.

It is an arithmetic number, because the mean of its divisors is an integer number (605706997).

Almost surely, 2^1211413993 is an apocalyptic number.

It is an amenable number.

1211413993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211413993 is an equidigital number, since it uses as much as digits as its factorization.

1211413993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 34.

The square root of 1211413993 is about 34805.3730478500. The cubic root of 1211413993 is about 1066.0171589591.

The spelling of 1211413993 in words is "one billion, two hundred eleven million, four hundred thirteen thousand, nine hundred ninety-three".