1299379511 has 2 divisors, whose sum is σ = 1299379512. Its totient is φ = 1299379510.

The previous prime is 1299379507. The next prime is 1299379519. The reversal of 1299379511 is 1159739921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1299379511 - 2² = 1299379507 is a prime.

It is a super-2 number, since 2×1299379511² = 3376774227213198242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299379519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649689755 + 649689756.

It is an arithmetic number, because the mean of its divisors is an integer number (649689756).

Almost surely, 2^1299379511 is an apocalyptic number.

1299379511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299379511 is an equidigital number, since it uses as much as digits as its factorization.

1299379511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 47.

The square root of 1299379511 is about 36046.9070933971. The cubic root of 1299379511 is about 1091.2192150998.

The spelling of 1299379511 in words is "one billion, two hundred ninety-nine million, three hundred seventy-nine thousand, five hundred eleven".