1298680308 has 36 divisors (see below), whose sum is σ = 3294005988. Its totient is φ = 431412480.

The previous prime is 1298680307. The next prime is 1298680319. The reversal of 1298680308 is 8030868921.

It can be written as a sum of positive squares in 2 ways, for example, as 1184874084 + 113806224 = 34422^2 + 10668^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1298680308³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298680307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51013 + ... + 72108.

Almost surely, 2^1298680308 is an apocalyptic number.

1298680308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1298680308 is an abundant number, since it is smaller than the sum of its proper divisors (1995325680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1298680308 is a wasteful number, since it uses less digits than its factorization.

1298680308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123424 (or 123419 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1298680308 is about 36037.2072724844. The cubic root of 1298680308 is about 1091.0234497009.

The spelling of 1298680308 in words is "one billion, two hundred ninety-eight million, six hundred eighty thousand, three hundred eight".