18860475448 has 32 divisors (see below), whose sum is σ = 35760657600. Its totient is φ = 9324838912.

The previous prime is 18860475437. The next prime is 18860475449. The reversal of 18860475448 is 84457406881.

It is a super-2 number, since 2×18860475448² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18860475449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248193 + ... + 315151.

It is an arithmetic number, because the mean of its divisors is an integer number (1117520550).

Almost surely, 2^18860475448 is an apocalyptic number.

It is an amenable number.

18860475448 is a deficient number, since it is larger than the sum of its proper divisors (16900182152).

18860475448 is a wasteful number, since it uses less digits than its factorization.

18860475448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67359 (or 67355 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 18860475448 in words is "eighteen billion, eight hundred sixty million, four hundred seventy-five thousand, four hundred forty-eight".