18151056 has 120 divisors (see below), whose sum is σ = 63370944. Its totient is φ = 4711680.

The previous prime is 18151051. The next prime is 18151073. The reversal of 18151056 is 65015181.

It is not an unprimeable number, because it can be changed into a prime (18151051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10270 + ... + 11906.

Almost surely, 2^18151056 is an apocalyptic number.

18151056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18151056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31685472).

18151056 is an abundant number, since it is smaller than the sum of its proper divisors (45219888).

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

18151056 is a wasteful number, since it uses less digits than its factorization.

18151056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 18151056 is about 4260.4056144926. The cubic root of 18151056 is about 262.8052069053.

The spelling of 18151056 in words is "eighteen million, one hundred fifty-one thousand, fifty-six".