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18750689382 = 236947449851
BaseRepresentation
bin10001011101101000…
…001101000001100110
31210101202201201021010
4101131220031001212
5301400134030012
612340340203050
71232442141615
oct213550150146
953352651233
1018750689382
117a52303507
123773699486
1319ca909a99
14c9c3db87c
1574b23ec3c
hex45da0d066

18750689382 has 16 divisors (see below), whose sum is σ = 37506860352. Its totient is φ = 6249316200.

The previous prime is 18750689381. The next prime is 18750689431. The reversal of 18750689382 is 28398605781.

It is a happy number.

It is a super-3 number, since 3×187506893823 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750689381) 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, 183244 + ... + 266607.

It is an arithmetic number, because the mean of its divisors is an integer number (2344178772).

Almost surely, 218750689382 is an apocalyptic number.

18750689382 is an abundant number, since it is smaller than the sum of its proper divisors (18756170970).

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

18750689382 is a wasteful number, since it uses less digits than its factorization.

18750689382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456803.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 18750689382 in words is "eighteen billion, seven hundred fifty million, six hundred eighty-nine thousand, three hundred eighty-two".

Divisors: 1 2 3 6 6947 13894 20841 41682 449851 899702 1349553 2699106 3125114897 6250229794 9375344691 18750689382