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2018708893 = 30742115619
BaseRepresentation
bin111100001010011…
…0000110110011101
312012200120001000001
41320110300312131
513113242141033
6532151534301
7101011512445
oct17024606635
95180501001
102018708893
11946565963
1248408a391
132622c7c06
14152169125
15bc35ae7d
hex78530d9d

2018708893 has 8 divisors (see below), whose sum is σ = 2030225120. Its totient is φ = 2007225360.

The previous prime is 2018708869. The next prime is 2018708969. The reversal of 2018708893 is 3988078102.

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 2018708893 - 29 = 2018708381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018708803) 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, 121438 + ... + 137056.

It is an arithmetic number, because the mean of its divisors is an integer number (253778140).

Almost surely, 22018708893 is an apocalyptic number.

It is an amenable number.

2018708893 is a deficient number, since it is larger than the sum of its proper divisors (11516227).

2018708893 is a wasteful number, since it uses less digits than its factorization.

2018708893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16347.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 2018708893 is about 44930.0444357670. The cubic root of 2018708893 is about 1263.8374844886.

The spelling of 2018708893 in words is "two billion, eighteen million, seven hundred eight thousand, eight hundred ninety-three".

Divisors: 1 307 421 15619 129247 4795033 6575599 2018708893