18806748168437 has 8 divisors (see below), whose sum is σ = 18852237355392. Its totient is φ = 18761306148000.

The previous prime is 18806748168427. The next prime is 18806748168463. The reversal of 18806748168437 is 73486184760881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18806748168437 - 2¹² = 18806748164341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806748168407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10993139 + ... + 12588192.

It is an arithmetic number, because the mean of its divisors is an integer number (2356529669424).

Almost surely, 2^{18806748168437} is an apocalyptic number.

It is an amenable number.

18806748168437 is a deficient number, since it is larger than the sum of its proper divisors (45489186955).

18806748168437 is a wasteful number, since it uses less digits than its factorization.

18806748168437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23583259.

The product of its (nonzero) digits is 346816512, while the sum is 71.

The spelling of 18806748168437 in words is "eighteen trillion, eight hundred six billion, seven hundred forty-eight million, one hundred sixty-eight thousand, four hundred thirty-seven".