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18148019801 = 103233756199
BaseRepresentation
bin10000111001101101…
…001100111001011001
31201211202200221000112
4100321231030321121
5244131343113201
612200451014105
71211503423502
oct207155147131
951752627015
1018148019801
1177730a197a
12362589a335
131932ab8072
14c4235bba9
157133960bb
hex439b4ce59

18148019801 has 8 divisors (see below), whose sum is σ = 18402883200. Its totient is φ = 17894669472.

The previous prime is 18148019767. The next prime is 18148019819. The reversal of 18148019801 is 10891084181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18148019801 - 26 = 18148019737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18148019821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354101 + ... + 402098.

It is an arithmetic number, because the mean of its divisors is an integer number (2300360400).

Almost surely, 218148019801 is an apocalyptic number.

It is an amenable number.

18148019801 is a deficient number, since it is larger than the sum of its proper divisors (254863399).

18148019801 is a wasteful number, since it uses less digits than its factorization.

18148019801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756535.

The product of its (nonzero) digits is 18432, while the sum is 41.

The spelling of 18148019801 in words is "eighteen billion, one hundred forty-eight million, nineteen thousand, eight hundred one".

Divisors: 1 103 233 23999 756199 77888497 176194367 18148019801