13190657940 has 72 divisors (see below), whose sum is σ = 40051714248. Its totient is φ = 3513987840.

The previous prime is 13190657933. The next prime is 13190657951. The reversal of 13190657940 is 4975609131.

13190657940 is a `hidden beast` number, since 1 + 31 + 9 + 0 + 6 + 579 + 40 = 666.

13190657940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 386830224 + 12803827716 = 19668^2 + 113154^2 .

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146170 + ... + 218510.

It is an arithmetic number, because the mean of its divisors is an integer number (556273809).

Almost surely, 2^13190657940 is an apocalyptic number.

13190657940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13190657940 is an abundant number, since it is smaller than the sum of its proper divisors (26861056308).

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

13190657940 is a wasteful number, since it uses less digits than its factorization.

13190657940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73369 (or 73364 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 13190657940 in words is "thirteen billion, one hundred ninety million, six hundred fifty-seven thousand, nine hundred forty".