18785103475 has 12 divisors (see below), whose sum is σ = 23379490720. Its totient is φ = 14972623200.

The previous prime is 18785103473. The next prime is 18785103497. The reversal of 18785103475 is 57430158781.

It is not a de Polignac number, because 18785103475 - 2¹ = 18785103473 is a prime.

It is a super-2 number, since 2×18785103475² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18785103473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1379580 + ... + 1393129.

Almost surely, 2^18785103475 is an apocalyptic number.

18785103475 is a deficient number, since it is larger than the sum of its proper divisors (4594387245).

18785103475 is a wasteful number, since it uses less digits than its factorization.

18785103475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772990 (or 2772985 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 18785103475 in words is "eighteen billion, seven hundred eighty-five million, one hundred three thousand, four hundred seventy-five".