1298481820 has 24 divisors (see below), whose sum is σ = 2736667584. Its totient is φ = 517515456.

The previous prime is 1298481817. The next prime is 1298481839. The reversal of 1298481820 is 281848921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111652 + ... + 122731.

It is an arithmetic number, because the mean of its divisors is an integer number (114027816).

Almost surely, 2^1298481820 is an apocalyptic number.

1298481820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298481820 is an abundant number, since it is smaller than the sum of its proper divisors (1438185764).

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

1298481820 is a wasteful number, since it uses less digits than its factorization.

1298481820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234669 (or 234667 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 1298481820 is about 36034.4532357576. The cubic root of 1298481820 is about 1090.9678635045.

The spelling of 1298481820 in words is "one billion, two hundred ninety-eight million, four hundred eighty-one thousand, eight hundred twenty".