13181796 has 18 divisors (see below), whose sum is σ = 33320742. Its totient is φ = 4393920.

The previous prime is 13181771. The next prime is 13181809. The reversal of 13181796 is 69718131.

It can be written as a sum of positive squares in only one way, i.e., 10653696 + 2528100 = 3264^2 + 1590^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 366161 = 13181796 / (1 + 3 + 1 + 8 + 1 + 7 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 13181796.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183045 + ... + 183116.

Almost surely, 2^13181796 is an apocalyptic number.

It is an amenable number.

13181796 is an abundant number, since it is smaller than the sum of its proper divisors (20138946).

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

13181796 is a wasteful number, since it uses less digits than its factorization.

13181796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366171 (or 366166 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13181796 is about 3630.6743175339. The cubic root of 13181796 is about 236.2244584800.

The spelling of 13181796 in words is "thirteen million, one hundred eighty-one thousand, seven hundred ninety-six".