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19106575001 = 61313222541
BaseRepresentation
bin10001110010110101…
…110011001010011001
31211022120101120112222
4101302311303022121
5303112240400001
612435532113425
71244323131203
oct216265631231
954276346488
1019106575001
118115188658
123852905875
131a56573ba7
14cd379b773
1576c5dc61b
hex472d73299

19106575001 has 4 divisors (see below), whose sum is σ = 19419797604. Its totient is φ = 18793352400.

The previous prime is 19106574997. The next prime is 19106575039. The reversal of 19106575001 is 10057560191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10057560191 = 71436794313.

It can be written as a sum of positive squares in 2 ways, for example, as 8854810000 + 10251765001 = 94100^2 + 101251^2 .

It is a cyclic number.

It is not a de Polignac number, because 19106575001 - 22 = 19106574997 is a prime.

It is a super-2 number, since 2×191065750012 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19106575051) 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, 156611210 + ... + 156611331.

It is an arithmetic number, because the mean of its divisors is an integer number (4854949401).

Almost surely, 219106575001 is an apocalyptic number.

It is an amenable number.

19106575001 is a deficient number, since it is larger than the sum of its proper divisors (313222603).

19106575001 is an equidigital number, since it uses as much as digits as its factorization.

19106575001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313222602.

The product of its (nonzero) digits is 9450, while the sum is 35.

The spelling of 19106575001 in words is "nineteen billion, one hundred six million, five hundred seventy-five thousand, one".

Divisors: 1 61 313222541 19106575001