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2130201218 = 2171311373491
BaseRepresentation
bin111111011111000…
…0100101010000010
312111110100102201102
41332332010222002
513330312414333
6551213334402
7103534261115
oct17676045202
95443312642
102130201218
119a3496782
124b5497402
1327c4335c2
14162cac57c
15c7030ae8
hex7ef84a82

2130201218 has 32 divisors (see below), whose sum is σ = 3434954688. Its totient is φ = 987251200.

The previous prime is 2130201217. The next prime is 2130201223. The reversal of 2130201218 is 8121020312.

It is a self number, because there is not a number n which added to its sum of digits gives 2130201218.

It is not an unprimeable number, because it can be changed into a prime (2130201211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608453 + ... + 611943.

It is an arithmetic number, because the mean of its divisors is an integer number (107342334).

Almost surely, 22130201218 is an apocalyptic number.

2130201218 is a deficient number, since it is larger than the sum of its proper divisors (1304753470).

2130201218 is a wasteful number, since it uses less digits than its factorization.

2130201218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2130201218 is about 46154.1029378754. The cubic root of 2130201218 is about 1286.6888658804.

The spelling of 2130201218 in words is "two billion, one hundred thirty million, two hundred one thousand, two hundred eighteen".

Divisors: 1 2 17 34 131 137 262 274 2227 2329 3491 4454 4658 6982 17947 35894 59347 118694 305099 457321 478267 610198 914642 956534 7774457 8130539 15548914 16261078 62652977 125305954 1065100609 2130201218