1211162479 has 2 divisors, whose sum is σ = 1211162480. Its totient is φ = 1211162478.

The previous prime is 1211162471. The next prime is 1211162489. The reversal of 1211162479 is 9742611121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211162479 - 2³ = 1211162471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211162471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605581239 + 605581240.

It is an arithmetic number, because the mean of its divisors is an integer number (605581240).

Almost surely, 2^1211162479 is an apocalyptic number.

1211162479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211162479 is an equidigital number, since it uses as much as digits as its factorization.

1211162479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 1211162479 is about 34801.7597112560. The cubic root of 1211162479 is about 1065.9433782921.

The spelling of 1211162479 in words is "one billion, two hundred eleven million, one hundred sixty-two thousand, four hundred seventy-nine".