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130961818 = 2132675783
BaseRepresentation
bin1111100111001…
…01000110011010
3100010102112211201
413303211012122
5232011234233
620554544414
73150104611
oct763450632
9303375751
10130961818
1167a19609
1237a3810a
1321194500
1413570878
15b76d77d
hex7ce519a

130961818 has 24 divisors (see below), whose sum is σ = 215928288. Its totient is φ = 59531472.

The previous prime is 130961807. The next prime is 130961827. The reversal of 130961818 is 818169031.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19755 + ... + 25537.

It is an arithmetic number, because the mean of its divisors is an integer number (8997012).

Almost surely, 2130961818 is an apocalyptic number.

130961818 is a deficient number, since it is larger than the sum of its proper divisors (84966470).

130961818 is a wasteful number, since it uses less digits than its factorization.

130961818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878 (or 5865 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 130961818 is about 11443.8550322870. The cubic root of 130961818 is about 507.8259602832.

The spelling of 130961818 in words is "one hundred thirty million, nine hundred sixty-one thousand, eight hundred eighteen".

Divisors: 1 2 13 26 67 134 169 338 871 1742 5783 11323 11566 22646 75179 150358 387461 774922 977327 1954654 5036993 10073986 65480909 130961818