18464703772 has 12 divisors (see below), whose sum is σ = 32314464000. Its totient is φ = 9231999776.

The previous prime is 18464703769. The next prime is 18464703793. The reversal of 18464703772 is 27730746481.

It is a happy number.

It is a super-2 number, since 2×18464703772² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56229 + ... + 200227.

It is an arithmetic number, because the mean of its divisors is an integer number (2692872000).

Almost surely, 2^18464703772 is an apocalyptic number.

It is an amenable number.

18464703772 is a deficient number, since it is larger than the sum of its proper divisors (13849760228).

18464703772 is a wasteful number, since it uses less digits than its factorization.

18464703772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176060 (or 176058 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 18464703772 in words is "eighteen billion, four hundred sixty-four million, seven hundred three thousand, seven hundred seventy-two".