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1078609001 = 2115111891
BaseRepresentation
bin100000001001010…
…0100010001101001
32210011121000101112
41000102210101221
54202110442001
6255010200105
735505011441
oct10022442151
92704530345
101078609001
115039349a8
12261283035
131426013a2
14a3371121
1564a5ccbb
hex404a4469

1078609001 has 4 divisors (see below), whose sum is σ = 1083721104. Its totient is φ = 1073496900.

The previous prime is 1078608953. The next prime is 1078609019. The reversal of 1078609001 is 1009068701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1009068701 = 1953108879.

It is a cyclic number.

It is not a de Polignac number, because 1078609001 - 222 = 1074414697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078602001) 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, 2555735 + ... + 2556156.

It is an arithmetic number, because the mean of its divisors is an integer number (270930276).

Almost surely, 21078609001 is an apocalyptic number.

It is an amenable number.

1078609001 is a deficient number, since it is larger than the sum of its proper divisors (5112103).

1078609001 is an equidigital number, since it uses as much as digits as its factorization.

1078609001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112102.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1078609001 is about 32842.1832556851. The cubic root of 1078609001 is about 1025.5449019441.

The spelling of 1078609001 in words is "one billion, seventy-eight million, six hundred nine thousand, one".

Divisors: 1 211 5111891 1078609001