1299163387 has 2 divisors, whose sum is σ = 1299163388. Its totient is φ = 1299163386.

The previous prime is 1299163379. The next prime is 1299163417. The reversal of 1299163387 is 7833619921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1299163387 - 2³ = 1299163379 is a prime.

It is a super-2 number, since 2×1299163387² = 3375651012242623538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1299163387.

It is not a weakly prime, because it can be changed into another prime (1299163357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649581693 + 649581694.

It is an arithmetic number, because the mean of its divisors is an integer number (649581694).

Almost surely, 2^1299163387 is an apocalyptic number.

1299163387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299163387 is an equidigital number, since it uses as much as digits as its factorization.

1299163387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 1299163387 is about 36043.9091525878. The cubic root of 1299163387 is about 1091.1587114167.

The spelling of 1299163387 in words is "one billion, two hundred ninety-nine million, one hundred sixty-three thousand, three hundred eighty-seven".