18012554 has 16 divisors (see below), whose sum is σ = 32695488. Its totient is φ = 7265472.

The previous prime is 18012541. The next prime is 18012559. The reversal of 18012554 is 45521081.

It is not an unprimeable number, because it can be changed into a prime (18012559) 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 7 ways as a sum of consecutive naturals, for example, 37604 + ... + 38079.

It is an arithmetic number, because the mean of its divisors is an integer number (2043468).

Almost surely, 2^18012554 is an apocalyptic number.

18012554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18012554 is a deficient number, since it is larger than the sum of its proper divisors (14682934).

18012554 is a wasteful number, since it uses less digits than its factorization.

18012554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75709.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 18012554 is about 4244.1199323299. The cubic root of 18012554 is about 262.1350526461.

The spelling of 18012554 in words is "eighteen million, twelve thousand, five hundred fifty-four".