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17868132029 = 111624375639
BaseRepresentation
bin10000101001000001…
…100000111010111101
31201010021001011011202
4100221001200322331
5243043220211104
612113012025245
71201534421246
oct205101407275
951107034152
1017868132029
11763a105070
123568002225
1318b9b0c7b7
14c17101ccd
156e8a0b51e
hex429060ebd

17868132029 has 4 divisors (see below), whose sum is σ = 19492507680. Its totient is φ = 16243756380.

The previous prime is 17868132011. The next prime is 17868132043. The reversal of 17868132029 is 92023186871.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 17868132029 - 216 = 17868066493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17868132089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812187809 + ... + 812187830.

It is an arithmetic number, because the mean of its divisors is an integer number (4873126920).

Almost surely, 217868132029 is an apocalyptic number.

It is an amenable number.

17868132029 is a deficient number, since it is larger than the sum of its proper divisors (1624375651).

17868132029 is a wasteful number, since it uses less digits than its factorization.

17868132029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624375650.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 17868132029 in words is "seventeen billion, eight hundred sixty-eight million, one hundred thirty-two thousand, twenty-nine".

Divisors: 1 11 1624375639 17868132029