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1988971482 = 23379199749
BaseRepresentation
bin111011010001101…
…0100101111011010
312010121121012221110
41312203110233122
513033134041412
6525210321150
7100200656451
oct16643245732
95117535843
101988971482
119307a4793
124761291b6
132590b5604
1414c227b98
15b9934d3c
hex768d4bda

1988971482 has 32 divisors (see below), whose sum is σ = 4090320000. Its totient is φ = 644303808.

The previous prime is 1988971469. The next prime is 1988971489. The reversal of 1988971482 is 2841798891.

It is not an unprimeable number, because it can be changed into a prime (1988971489) 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, 199144 + ... + 208892.

It is an arithmetic number, because the mean of its divisors is an integer number (127822500).

Almost surely, 21988971482 is an apocalyptic number.

1988971482 is an abundant number, since it is smaller than the sum of its proper divisors (2101348518).

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

1988971482 is a wasteful number, since it uses less digits than its factorization.

1988971482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710.

The product of its digits is 2322432, while the sum is 57.

The square root of 1988971482 is about 44597.8865194305. The cubic root of 1988971482 is about 1257.6009364229.

The spelling of 1988971482 in words is "one billion, nine hundred eighty-eight million, nine hundred seventy-one thousand, four hundred eighty-two".

Divisors: 1 2 3 6 37 74 111 222 919 1838 2757 5514 9749 19498 29247 34003 58494 68006 102009 204018 360713 721426 1082139 2164278 8959331 17918662 26877993 53755986 331495247 662990494 994485741 1988971482