1979249611 has 2 divisors, whose sum is σ = 1979249612. Its totient is φ = 1979249610.

The previous prime is 1979249561. The next prime is 1979249639. The reversal of 1979249611 is 1169429791.

It is a strong prime.

It is an emirp because it is prime and its reverse (1169429791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1979249611 - 2¹⁵ = 1979216843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1979249011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989624805 + 989624806.

It is an arithmetic number, because the mean of its divisors is an integer number (989624806).

Almost surely, 2^1979249611 is an apocalyptic number.

1979249611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979249611 is an equidigital number, since it uses as much as digits as its factorization.

1979249611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 49.

The square root of 1979249611 is about 44488.7582541927. The cubic root of 1979249611 is about 1255.5485844727.

The spelling of 1979249611 in words is "one billion, nine hundred seventy-nine million, two hundred forty-nine thousand, six hundred eleven".