18196628268 has 96 divisors (see below), whose sum is σ = 53669453824. Its totient is φ = 4669394688.

The previous prime is 18196628267. The next prime is 18196628291. The reversal of 18196628268 is 86282669181.

It is a happy number.

It is a super-2 number, since 2×18196628268² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18196628267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184780 + ... + 265587.

Almost surely, 2^18196628268 is an apocalyptic number.

It is an amenable number.

18196628268 is an abundant number, since it is smaller than the sum of its proper divisors (35472825556).

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

18196628268 is a wasteful number, since it uses less digits than its factorization.

18196628268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450431 (or 450429 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 57.

The spelling of 18196628268 in words is "eighteen billion, one hundred ninety-six million, six hundred twenty-eight thousand, two hundred sixty-eight".