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1868002207 = 61105129137
BaseRepresentation
bin110111101010111…
…0111001110011111
311211011222100021221
41233111313032133
512311202032312
6505205434211
764201520401
oct15725671637
94734870257
101868002207
11879490785
1244170b967
1323a00c466
1413a138b71
15adedc207
hex6f57739f

1868002207 has 8 divisors (see below), whose sum is σ = 1900496912. Its totient is φ = 1835568000.

The previous prime is 1868002133. The next prime is 1868002217. The reversal of 1868002207 is 7022008681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1868002207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868002217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49543 + ... + 78679.

It is an arithmetic number, because the mean of its divisors is an integer number (237562114).

Almost surely, 21868002207 is an apocalyptic number.

1868002207 is a deficient number, since it is larger than the sum of its proper divisors (32494705).

1868002207 is a wasteful number, since it uses less digits than its factorization.

1868002207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30249.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1868002207 is about 43220.3911018862. The cubic root of 1868002207 is about 1231.5700766212.

The spelling of 1868002207 in words is "one billion, eight hundred sixty-eight million, two thousand, two hundred seven".

Divisors: 1 61 1051 29137 64111 1777357 30622987 1868002207