180343874438 has 32 divisors (see below), whose sum is σ = 338400632640. Its totient is φ = 70175237760.

The previous prime is 180343874429. The next prime is 180343874461. The reversal of 180343874438 is 834478343081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 180343874438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8111033 + ... + 8133236.

It is an arithmetic number, because the mean of its divisors is an integer number (10575019770).

Almost surely, 2^180343874438 is an apocalyptic number.

180343874438 is a deficient number, since it is larger than the sum of its proper divisors (158056758202).

180343874438 is a wasteful number, since it uses less digits than its factorization.

180343874438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16244352.

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 180343874438 in words is "one hundred eighty billion, three hundred forty-three million, eight hundred seventy-four thousand, four hundred thirty-eight".