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19160172431 = 877111719559
BaseRepresentation
bin10001110110000010…
…010000011110001111
31211110022020121101222
4101312002100132033
5303220001004211
612445124553555
71245543531011
oct216602203617
954408217358
1019160172431
118142466154
1238688528bb
131a646bb84a
14cda9501b1
157721781db
hex47609078f

19160172431 has 8 divisors (see below), whose sum is σ = 19200174240. Its totient is φ = 19120213728.

The previous prime is 19160172359. The next prime is 19160172469. The reversal of 19160172431 is 13427106191.

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 19160172431 - 214 = 19160156047 is a prime.

It is a super-2 number, since 2×191601724312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19160172391 and 19160172400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19160172481) 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, 969830 + ... + 989388.

It is an arithmetic number, because the mean of its divisors is an integer number (2400021780).

Almost surely, 219160172431 is an apocalyptic number.

19160172431 is a deficient number, since it is larger than the sum of its proper divisors (40001809).

19160172431 is a wasteful number, since it uses less digits than its factorization.

19160172431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21553.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 19160172431 in words is "nineteen billion, one hundred sixty million, one hundred seventy-two thousand, four hundred thirty-one".

Divisors: 1 877 1117 19559 979609 17153243 21847403 19160172431