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2180897039 = 13135814649
BaseRepresentation
bin1000000111111101…
…1101100100001111
312121222202001022102
42001333131210033
513431302201124
61000224105315
7105021214256
oct20177354417
95558661272
102180897039
11a1a072252
1250a46523b
13289aa3629
1416990779d
15cb6e6aae
hex81fdd90f

2180897039 has 8 divisors (see below), whose sum is σ = 2198631600. Its totient is φ = 2163179200.

The previous prime is 2180897023. The next prime is 2180897087. The reversal of 2180897039 is 9307980812.

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 2180897039 - 24 = 2180897023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2180896984 and 2180897002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180897239) 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, 466787 + ... + 471435.

It is an arithmetic number, because the mean of its divisors is an integer number (274828950).

Almost surely, 22180897039 is an apocalyptic number.

2180897039 is a deficient number, since it is larger than the sum of its proper divisors (17734561).

2180897039 is a wasteful number, since it uses less digits than its factorization.

2180897039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 2180897039 is about 46700.0753639649. The cubic root of 2180897039 is about 1296.8160819870.

The spelling of 2180897039 in words is "two billion, one hundred eighty million, eight hundred ninety-seven thousand, thirty-nine".

Divisors: 1 131 3581 4649 469111 609019 16648069 2180897039