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187014879890 = 2518701487989
BaseRepresentation
bin1010111000101011110…
…1001001101010010010
3122212201101111020101222
42232022331021222102
511031001302124030
6221525145525042
716340255151656
oct2561275115222
9585641436358
10187014879890
117234902a283
12302b2aa3782
131483505a257
1490a170aa66
154ce84b13e5
hex2b8af49a92

187014879890 has 8 divisors (see below), whose sum is σ = 336626783820. Its totient is φ = 74805951952.

The previous prime is 187014879833. The next prime is 187014879917. The reversal of 187014879890 is 98978410781.

187014879890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 184515779809 + 2499100081 = 429553^2 + 49991^2 .

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

It is a super-2 number, since 2×1870148798902 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9350743985 + ... + 9350744004.

Almost surely, 2187014879890 is an apocalyptic number.

187014879890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

187014879890 is a deficient number, since it is larger than the sum of its proper divisors (149611903930).

187014879890 is a wasteful number, since it uses less digits than its factorization.

187014879890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18701487996.

The product of its (nonzero) digits is 8128512, while the sum is 62.

The spelling of 187014879890 in words is "one hundred eighty-seven billion, fourteen million, eight hundred seventy-nine thousand, eight hundred ninety".

Divisors: 1 2 5 10 18701487989 37402975978 93507439945 187014879890