18750064385 has 8 divisors (see below), whose sum is σ = 24230852520. Its totient is φ = 13846201344.

The previous prime is 18750064379. The next prime is 18750064469. The reversal of 18750064385 is 58346005781.

It can be written as a sum of positive squares in 4 ways, for example, as 4261608961 + 14488455424 = 65281^2 + 120368^2 .

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 18750064385 - 2¹⁸ = 18749802241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144231200 + ... + 144231329.

It is an arithmetic number, because the mean of its divisors is an integer number (3028856565).

Almost surely, 2^18750064385 is an apocalyptic number.

It is an amenable number.

18750064385 is a deficient number, since it is larger than the sum of its proper divisors (5480788135).

18750064385 is a wasteful number, since it uses less digits than its factorization.

18750064385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288462547.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 18750064385 in words is "eighteen billion, seven hundred fifty million, sixty-four thousand, three hundred eighty-five".