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1979008068 = 223164917339
BaseRepresentation
bin111010111110101…
…0100010001000100
312002220212000201010
41311331110101010
513023111224233
6524213002220
7100020201552
oct16575242104
95086760633
101979008068
1192610a064
12472923370
132570075bb
1414ab92bd2
15b8b17b63
hex75f54444

1979008068 has 12 divisors (see below), whose sum is σ = 4617685520. Its totient is φ = 659669352.

The previous prime is 1979008051. The next prime is 1979008081. The reversal of 1979008068 is 8608009791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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, 82458658 + ... + 82458681.

Almost surely, 21979008068 is an apocalyptic number.

It is an amenable number.

1979008068 is an abundant number, since it is smaller than the sum of its proper divisors (2638677452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979008068 is a wasteful number, since it uses less digits than its factorization.

1979008068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164917346 (or 164917344 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 1979008068 is about 44486.0435192882. The cubic root of 1979008068 is about 1255.4975076559.

The spelling of 1979008068 in words is "one billion, nine hundred seventy-nine million, eight thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 164917339 329834678 494752017 659669356 989504034 1979008068