18870336457 has 8 divisors (see below), whose sum is σ = 22701156800. Its totient is φ = 15323280624.

The previous prime is 18870336451. The next prime is 18870336473. The reversal of 18870336457 is 75463307881.

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 18870336457 - 2¹¹ = 18870334409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18870336451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70940982 + ... + 70941247.

It is an arithmetic number, because the mean of its divisors is an integer number (2837644600).

Almost surely, 2^18870336457 is an apocalyptic number.

It is an amenable number.

18870336457 is a deficient number, since it is larger than the sum of its proper divisors (3830820343).

18870336457 is a wasteful number, since it uses less digits than its factorization.

18870336457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141882255.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 18870336457 in words is "eighteen billion, eight hundred seventy million, three hundred thirty-six thousand, four hundred fifty-seven".