13489604820 has 72 divisors (see below), whose sum is σ = 41870084256. Its totient is φ = 3513569472.

The previous prime is 13489604809. The next prime is 13489604831. The reversal of 13489604820 is 2840698431.

It is a happy number.

13489604820 is a `hidden beast` number, since 1 + 34 + 8 + 9 + 604 + 8 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (13489604809) and next prime (13489604831).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 863682 + ... + 879161.

It is an arithmetic number, because the mean of its divisors is an integer number (581528948).

Almost surely, 2^13489604820 is an apocalyptic number.

13489604820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13489604820 is an abundant number, since it is smaller than the sum of its proper divisors (28380479436).

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

13489604820 is a wasteful number, since it uses less digits than its factorization.

13489604820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742901 (or 1742896 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 13489604820 in words is "thirteen billion, four hundred eighty-nine million, six hundred four thousand, eight hundred twenty".