1298847816 has 48 divisors (see below), whose sum is σ = 4020244800. Its totient is φ = 371099232.

The previous prime is 1298847811. The next prime is 1298847833. The reversal of 1298847816 is 6187488921.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1298847811) 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, 1288036 + ... + 1289043.

It is an arithmetic number, because the mean of its divisors is an integer number (83755100).

Almost surely, 2^1298847816 is an apocalyptic number.

It is an amenable number.

1298847816 is an abundant number, since it is smaller than the sum of its proper divisors (2721396984).

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

1298847816 is a wasteful number, since it uses less digits than its factorization.

1298847816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577098 (or 2577091 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 1298847816 is about 36039.5312955094. The cubic root of 1298847816 is about 1091.0703555991.

The spelling of 1298847816 in words is "one billion, two hundred ninety-eight million, eight hundred forty-seven thousand, eight hundred sixteen".