18196149612 has 24 divisors (see below), whose sum is σ = 42470146096. Its totient is φ = 6063602688.

The previous prime is 18196149571. The next prime is 18196149617. The reversal of 18196149612 is 21694169181.

It is not an unprimeable number, because it can be changed into a prime (18196149617) 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 7 ways as a sum of consecutive naturals, for example, 179653 + ... + 262044.

Almost surely, 2^18196149612 is an apocalyptic number.

18196149612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18196149612 is an abundant number, since it is smaller than the sum of its proper divisors (24273996484).

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

18196149612 is a wasteful number, since it uses less digits than its factorization.

18196149612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445137 (or 445135 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The spelling of 18196149612 in words is "eighteen billion, one hundred ninety-six million, one hundred forty-nine thousand, six hundred twelve".