18001137854 has 32 divisors (see below), whose sum is σ = 32691314880. Its totient is φ = 7257189888.

The previous prime is 18001137827. The next prime is 18001137899. The reversal of 18001137854 is 45873110081.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 464264 + ... + 501540.

It is an arithmetic number, because the mean of its divisors is an integer number (1021603590).

Almost surely, 2^18001137854 is an apocalyptic number.

18001137854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18001137854 is a deficient number, since it is larger than the sum of its proper divisors (14690177026).

18001137854 is a wasteful number, since it uses less digits than its factorization.

18001137854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39332.

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 18001137854 in words is "eighteen billion, one million, one hundred thirty-seven thousand, eight hundred fifty-four".