18042272396 has 36 divisors (see below), whose sum is σ = 34421467080. Its totient is φ = 8251608960.

The previous prime is 18042272389. The next prime is 18042272411. The reversal of 18042272396 is 69327224081.

It is a super-2 number, since 2×18042272396² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 77225 + ... + 205056.

Almost surely, 2^18042272396 is an apocalyptic number.

It is an amenable number.

18042272396 is a deficient number, since it is larger than the sum of its proper divisors (16379194684).

18042272396 is a wasteful number, since it uses less digits than its factorization.

18042272396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282362 (or 282331 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 18042272396 in words is "eighteen billion, forty-two million, two hundred seventy-two thousand, three hundred ninety-six".