18469353604 has 27 divisors (see below), whose sum is σ = 35005575717. Its totient is φ = 8522686224.

The previous prime is 18469353563. The next prime is 18469353619. The reversal of 18469353604 is 40635396481.

It is a happy number.

The square root of 18469353604 is 135902.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2732152900 + 15737200704 = 52270^2 + 125448^2 .

It is a super-2 number, since 2×18469353604² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 3530839 + ... + 3536065.

Almost surely, 2^18469353604 is an apocalyptic number.

18469353604 is the 135902-nd square number.

It is an amenable number.

18469353604 is a deficient number, since it is larger than the sum of its proper divisors (16536222113).

18469353604 is an frugal number, since it uses more digits than its factorization.

18469353604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10484 (or 5242 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

Multiplying 18469353604 by its sum of digits (49), we get a square (904998326596 = 951314²).

The spelling of 18469353604 in words is "eighteen billion, four hundred sixty-nine million, three hundred fifty-three thousand, six hundred four".