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19319902970 = 251931990297
BaseRepresentation
bin10001111111100011…
…100101001011111010
31211212102210202111212
4101333203211023322
5304031343343340
612513032323122
71252523315504
oct217743451372
954772722455
1019319902970
118214644065
1238b22434a2
131a8b816764
14d13c4cd74
157811caa65
hex47f8e52fa

19319902970 has 8 divisors (see below), whose sum is σ = 34775825364. Its totient is φ = 7727961184.

The previous prime is 19319902969. The next prime is 19319903033. The reversal of 19319902970 is 7920991391.

It can be written as a sum of positive squares in 2 ways, for example, as 19072438609 + 247464361 = 138103^2 + 15731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965995139 + ... + 965995158.

Almost surely, 219319902970 is an apocalyptic number.

19319902970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19319902970 is a deficient number, since it is larger than the sum of its proper divisors (15455922394).

19319902970 is a wasteful number, since it uses less digits than its factorization.

19319902970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931990304.

The product of its (nonzero) digits is 275562, while the sum is 50.

The spelling of 19319902970 in words is "nineteen billion, three hundred nineteen million, nine hundred two thousand, nine hundred seventy".

Divisors: 1 2 5 10 1931990297 3863980594 9659951485 19319902970