18488135446 has 32 divisors (see below), whose sum is σ = 31538543616. Its totient is φ = 8052060000.

The previous prime is 18488135429. The next prime is 18488135447. The reversal of 18488135446 is 64453188481.

It is a super-2 number, since 2×18488135446² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18488135393 and 18488135402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18488135447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65320 + ... + 203083.

It is an arithmetic number, because the mean of its divisors is an integer number (985579488).

Almost surely, 2^18488135446 is an apocalyptic number.

18488135446 is a deficient number, since it is larger than the sum of its proper divisors (13050408170).

18488135446 is a wasteful number, since it uses less digits than its factorization.

18488135446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268548.

The product of its digits is 2949120, while the sum is 52.

The spelling of 18488135446 in words is "eighteen billion, four hundred eighty-eight million, one hundred thirty-five thousand, four hundred forty-six".