1298599071 has 24 divisors (see below), whose sum is σ = 2159620992. Its totient is φ = 674312400.

The previous prime is 1298599037. The next prime is 1298599073. The reversal of 1298599071 is 1709958921.

It is not a de Polignac number, because 1298599071 - 2¹⁹ = 1298074783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298599073) 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 in 23 ways as a sum of consecutive naturals, for example, 546516 + ... + 548886.

It is an arithmetic number, because the mean of its divisors is an integer number (89984208).

Almost surely, 2^1298599071 is an apocalyptic number.

1298599071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1298599071 is a deficient number, since it is larger than the sum of its proper divisors (861021921).

1298599071 is an frugal number, since it uses more digits than its factorization.

1298599071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763 (or 2392 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 51.

The square root of 1298599071 is about 36036.0801281160. The cubic root of 1298599071 is about 1091.0007001143. Note that the first 3 decimals are identical.

The spelling of 1298599071 in words is "one billion, two hundred ninety-eight million, five hundred ninety-nine thousand, seventy-one".