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18937751342 = 210986870419
BaseRepresentation
bin10001101000110001…
…110010011100101110
31210212210201110000212
4101220301302130232
5302241031020332
612411101422422
71240203142016
oct215061623456
953783643025
1018937751342
118038959974
12380626aa12
131a2a5b4133
14cb91b2c46
1575c8908b2
hex468c7272e

18937751342 has 8 divisors (see below), whose sum is σ = 28667238600. Its totient is φ = 9382005144.

The previous prime is 18937751207. The next prime is 18937751351. The reversal of 18937751342 is 24315773981.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43434992 + ... + 43435427.

It is an arithmetic number, because the mean of its divisors is an integer number (3583404825).

Almost surely, 218937751342 is an apocalyptic number.

18937751342 is a deficient number, since it is larger than the sum of its proper divisors (9729487258).

18937751342 is a wasteful number, since it uses less digits than its factorization.

18937751342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86870530.

The product of its digits is 1270080, while the sum is 50.

The spelling of 18937751342 in words is "eighteen billion, nine hundred thirty-seven million, seven hundred fifty-one thousand, three hundred forty-two".

Divisors: 1 2 109 218 86870419 173740838 9468875671 18937751342