18201010019090 has 32 divisors (see below), whose sum is σ = 33224444904960. Its totient is φ = 7177605400000.

The previous prime is 18201010019069. The next prime is 18201010019113. The reversal of 18201010019090 is 9091001010281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19967396 + ... + 20859024.

It is an arithmetic number, because the mean of its divisors is an integer number (1038263903280).

Almost surely, 2^{18201010019090} is an apocalyptic number.

18201010019090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18201010019090 is a deficient number, since it is larger than the sum of its proper divisors (15023434885870).

18201010019090 is a wasteful number, since it uses less digits than its factorization.

18201010019090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920458.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 18201010019090 in words is "eighteen trillion, two hundred one billion, ten million, nineteen thousand, ninety".