18196413976 has 64 divisors (see below), whose sum is σ = 38141107200. Its totient is φ = 8081769600.

The previous prime is 18196413973. The next prime is 18196414031. The reversal of 18196413976 is 67931469181.

It is a super-2 number, since 2×18196413976² (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 (18196413971) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 561331 + ... + 592861.

It is an arithmetic number, because the mean of its divisors is an integer number (595954800).

Almost surely, 2^18196413976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18196413976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19070553600).

18196413976 is an abundant number, since it is smaller than the sum of its proper divisors (19944693224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18196413976 is a wasteful number, since it uses less digits than its factorization.

18196413976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31760 (or 31756 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 55.

The spelling of 18196413976 in words is "eighteen billion, one hundred ninety-six million, four hundred thirteen thousand, nine hundred seventy-six".