13538140180 has 24 divisors (see below), whose sum is σ = 29410443720. Its totient is φ = 5228522880.

The previous prime is 13538140159. The next prime is 13538140199. The reversal of 13538140180 is 8104183531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 552626064 + 12985514116 = 23508^2 + 113954^2 .

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, 11670231 + ... + 11671390.

It is an arithmetic number, because the mean of its divisors is an integer number (1225435155).

Almost surely, 2^13538140180 is an apocalyptic number.

13538140180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13538140180 is an abundant number, since it is smaller than the sum of its proper divisors (15872303540).

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

13538140180 is a wasteful number, since it uses less digits than its factorization.

13538140180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23341659 (or 23341657 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

It can be divided in two parts, 135381 and 40180, that added together give a square (175561 = 419²).

The spelling of 13538140180 in words is "thirteen billion, five hundred thirty-eight million, one hundred forty thousand, one hundred eighty".