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19674739795 = 517474924841
BaseRepresentation
bin10010010100101101…
…001011010001010011
31212210011111100010111
4102110231023101103
5310243213133140
613012145542151
71264362346264
oct222455132123
955704440114
1019674739795
118386972237
123991044957
131b171a4389
14d4901896b
157a241c7ea
hex494b4b453

19674739795 has 16 divisors (see below), whose sum is σ = 25530380928. Its totient is φ = 14498728960.

The previous prime is 19674739783. The next prime is 19674739831. The reversal of 19674739795 is 59793747691.

It is not a de Polignac number, because 19674739795 - 29 = 19674739283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19674739795.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2458426 + ... + 2466415.

It is an arithmetic number, because the mean of its divisors is an integer number (1595648808).

Almost surely, 219674739795 is an apocalyptic number.

19674739795 is a deficient number, since it is larger than the sum of its proper divisors (5855641133).

19674739795 is a wasteful number, since it uses less digits than its factorization.

19674739795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4924910.

The product of its digits is 90016920, while the sum is 67.

The spelling of 19674739795 in words is "nineteen billion, six hundred seventy-four million, seven hundred thirty-nine thousand, seven hundred ninety-five".

Divisors: 1 5 17 47 85 235 799 3995 4924841 24624205 83722297 231467527 418611485 1157337635 3934947959 19674739795