13498890820 has 12 divisors (see below), whose sum is σ = 28347670764. Its totient is φ = 5399556320.

The previous prime is 13498890787. The next prime is 13498890827. The reversal of 13498890820 is 2809889431.

It can be written as a sum of positive squares in 2 ways, for example, as 10719703296 + 2779187524 = 103536^2 + 52718^2 .

It is not an unprimeable number, because it can be changed into a prime (13498890827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337472251 + ... + 337472290.

It is an arithmetic number, because the mean of its divisors is an integer number (2362305897).

Almost surely, 2^13498890820 is an apocalyptic number.

13498890820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13498890820 is an abundant number, since it is smaller than the sum of its proper divisors (14848779944).

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

13498890820 is a wasteful number, since it uses less digits than its factorization.

13498890820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674944550 (or 674944548 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 13498890820 in words is "thirteen billion, four hundred ninety-eight million, eight hundred ninety thousand, eight hundred twenty".