Search a number
-
+
17792106149 = 18198298929
BaseRepresentation
bin10000100100011111…
…011111111010100101
31200220221222122021102
4100210133133322211
5242414234344044
612101254325445
71166622256406
oct204437377245
950827878242
1017792106149
1176001a8764
123546659885
1318a714127c
14c0ad919ad
156e1ee024e
hex4247dfea5

17792106149 has 4 divisors (see below), whose sum is σ = 17890405260. Its totient is φ = 17693807040.

The previous prime is 17792106133. The next prime is 17792106161. The reversal of 17792106149 is 94160129771.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1169161249 + 16622944900 = 34193^2 + 128930^2 .

It is not a de Polignac number, because 17792106149 - 24 = 17792106133 is a prime.

It is a super-2 number, since 2×177921061492 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17792106119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49149284 + ... + 49149645.

It is an arithmetic number, because the mean of its divisors is an integer number (4472601315).

Almost surely, 217792106149 is an apocalyptic number.

It is an amenable number.

17792106149 is a deficient number, since it is larger than the sum of its proper divisors (98299111).

17792106149 is an equidigital number, since it uses as much as digits as its factorization.

17792106149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98299110.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 17792106149 in words is "seventeen billion, seven hundred ninety-two million, one hundred six thousand, one hundred forty-nine".

Divisors: 1 181 98298929 17792106149